HEP Theory hep-th

Physicists studied a black hole in two-dimensional space to test a modified theory of gravity. It turned out that even in such a universe, a black hole exists, but its property responsible for accelerated expansion changes. Then the scientists calculated the motion of particles and light around it.

The Generalized Uncertainty Principle (GUP) posits that space is made of quantum 'pixels.' This feature acted as dark energy in the early universe, and today it influences galaxy formation and leaves a trace in gravitational waves. New observatories will be able to measure this effect.

Researchers found that if Higgs particle collisions are required to always produce maximally entangled states, the Higgs potential automatically extends its global symmetry. This leads to an exact symmetry U(2)×U(2), spontaneously broken to U(1)×U(1), giving rise to six massless Goldstone bosons. A

At the quantum level, space and time resemble a foam of microscopic bubbles. Neural networks have learned to instantly compute their interactions, replacing hours of calculations. This brings us closer to understanding the structure of the Universe at the smallest scales.

A new model combines loop quantum gravity and dark energy, giving birth to a black hole with a triple horizon. This layered structure affects the shadow, vibrations, and light deflection, promising to become a key to testing quantum gravity and the nature of the universe's accelerating expansion.

The study reveals an unusual transition in one-dimensional magnetic chains, where ordered and disordered states coexist. The key was nonreciprocal symmetries—rules with no reverse path, like a door that only opens one way. This allowed them to not only describe a single critical point but also gener

Particle collisions are usually chaotic due to their internal entanglements. But if you remove these entanglements, an elegant symmetry emerges, simplifying the description of the microworld. The discovery builds on ideas from quantum information science.

In some quantum systems, information spreads not gradually but like an avalanche. Additional symmetries act as 'super-spreaders' of rumors. This overturns previous ideas about the maximum speed of chaos and promises a breakthrough in quantum technologies.

At the edge of the observable Universe, curved spacetime creates mysterious twistings — linked to infinite values. Roger Penrose's method compresses infinity into a point and yields a finite result. This is key to gravitational waves and the permanent deformation of space.

Some black holes behave like water that can boil and condense. Quantum effects complicate the picture but don't break the underlying pattern. This brings us closer to understanding spacetime at the micro level.

The universe is expanding, but measurements of its speed give conflicting numbers. This puzzle is called the Hubble tension. A new model suggests that in the early universe, a phase transition occurred in a hidden dark sector. It’s like the sudden freezing of supercooled water: a burst of energy was

The DESI survey examined the motion of galaxies and supernovae, testing the constancy of dark energy. Faint signals point to its evolution, and the Mirage model gave the best but not definitive result. If the energy is indeed growing, the Universe could face a tearing apart of matter.

Researchers have shown that if the heat and cold sources in a quantum maser (microwave amplifier) race along at nearly the speed of light, this engine circumvents the classical efficiency limit. Moreover, it can operate even without a temperature difference—the motion itself serves as fuel.

Black holes are not always perfectly rigid. Under the influence of a field of matter particles (such as electrons), they bend, although it was previously thought that weak influences couldn't deform them. Ordinary fields, like light or gravity, leave them unperturbed, but matter does not.

Spinning black holes and neutron stars: their calculations used to be incredibly cumbersome. Scientists proposed a method where everything reduces to a generating function. It's like a universal dough — from it, by simple differentiation, you get any characteristic of the system. The new approach ha

Physicists have proposed a way to test the hypothesis of a fifth dimension the size of a bacterium. If right-handed neutrinos live in it, then by measuring the energy of electrons in KATRIN, we will see sharp steps — one or more. Their number and position will reveal the properties of the hidden wor

A particle thermometer accelerated through vacuum heats up, and the way it reaches equilibrium depends on the field type and dimensions. Intriguingly, it heats faster than it cools, mimicking the Mpemba effect. This asymmetry provides a fingerprint to identify the Unruh effect.

Usually passive, the Higgs field inside a black hole gives rise to antigravity, preventing collapse into a point and creating a tunnel. The i(SM+GR) theory unites particle physics and gravity, predicting traversable black holes and the possibility of a universe before the Big Bang.

By analyzing the final 'plunge' of matter, scientists search for spectral signatures of impostors. The fakes produce a ringing: a comb of resonances at low frequencies and a sharp cutoff at high ones. Stacking signals from many events lets them hear even the quietest notes.

In particle theory, there’s a puzzling phenomenon that usually calls for a new particle. But the authors found that this role falls to ordinary hydrogen and antihydrogen, forming a special combination. The discovery brings the atomic world and fundamental forces closer together.

Recent observations of supernovae, galaxy distribution, and the Big Bang afterglow show that dark energy density is not constant. This challenges the standard cosmological model and promises a revision of the Universe's evolution.

Like a stadium emptying, a fluorescent dye dims quickly, then slows to a trickle. The lingering glow isn't uniform: its pace depends on which color you watch. This quantum oddity reveals hidden exit routes for escaping light.

Black holes usually reflect some waves. By shaping these waves to hit a precise resonance, physicists forced a black hole to absorb all energy, turning perfectly black. The absorbed energy is then released as a distinct ring, like a bell's tone revealing its shape. This technique could unveil the se

Scientists have theoretically demonstrated that the information accumulated by a black hole (its “memory burden”) affects its oscillations under external perturbations. Two black holes of identical mass but with different information loads emit different gravitational wave spectra. This discovery pr

When particle rays collide in space, they can create microscopic black holes that instantly evaporate into a stream of neutrinos. Already, by studying neutrinos from a distant galaxy, scientists have tested energy limits where gravity changes the rules. Upcoming observatories will search even deeper

Scientists have proposed a model where the universe didn’t explode from a point but first contracted and then bounced. Quantum effects during the bounce smooth out any distortions, making space uniform and the same in all directions. This is a natural explanation for the cosmos’s smoothness, requiri

Analysis of galaxy maps, quasar light, and supernovae shows that the simple model of constant dark energy is losing to a version with a smoothly changing force. This needs verification, but it's intriguing.

The double copy trick turns the cold birth of particles in a strong electric field into warm Hawking radiation. The horizon and temperature pop up by themselves, even though the original recipe doesn’t include them. This kitchen wizardry bridges gravity and the forces of the microworld.

The discovery shows that the expulsion of a magnetic field, the hallmark of superconductors, can occur in ordinary conductors and even insulators. In such 'chimeric' materials, opposite properties coexist. Experiments on networks of superconducting switches promise practical magnetic shields.

Dark matter—the universe's invisible mass—might be a swarm of primordial black holes. Scientists have found a way to spot them: a hole with the mass of an asteroid would disrupt the precise ticking of pulsars; a more massive one, crashing into an icy body beyond Pluto, would light up like a searchli

Clouds of ultra-light particles turn black holes into gravitational atoms. New calculations show that after black hole mergers, such clouds noticeably change their ring, which can be detected by gravitational wave detectors.

Physicists have built a model where the number of dimensions isn't fixed but a quantum property that changes with heat. This approach could shed new light on black holes and the behavior of materials.

Physicists have described black holes using string theory: it turns out these giants obey equations familiar from the behavior of water. By changing pressure and temperature, you can make a black hole 'boil' or 'condense', and at extreme cold — even 'freeze'. Thus, a cosmic object becomes a testing

Tiny closed bubble universes might not be empty but filled to the brim with information. Yet it's shattered, like a mirror into shards: each observer sees only their own fragment, and assembling the whole is impossible. This explains long-standing black hole paradoxes and makes reality dependent on

The quantum jitter of free electrons, too tiny for direct observation, can be made noticeable by twisting the particles into a vortex and mixing their positive and negative energy states.

Physicists modeled a signal passing through a traversable wormhole. It turns out the tunnel works like a mirrored hallway: the wave bounces between two gravitational barriers, creating echo signals. The more twisted the wave, the louder the echo. This repeating pattern could be used to search for wo

A hidden dimension in the shape of a Klein bottle inherently breaks the mirror symmetry that keeps matter and antimatter in balance. As our 3D universe slips through a layer of virtual particles in this dimension, real matter is born.

The ER=EPR hypothesis links entangled particles with a wormhole, like two water drops connected by a single straw. Scientists calculated that an electric field leaking into such a tunnel would shift hydrogen's 'radio voice' and give atoms a tiny charge. Comparison with lab data ruled out any noticea

An experiment with giant atoms sensitive to electric fields showed how an unstable emptiness transforms into a stable one, forming bubbles. The rate of the process depends on external influences exactly as theory predicts, as long as everything is perfectly calibrated. The slightest imprecision brea

Time is usually the same for all. But in the microcosm, the void is not empty: it bubbles with virtual particles, and this jitter disrupts tiny clocks in different ways. Researchers have shown that two timekeeping devices can drift apart due to the quantum backdrop — even when placed side by side.

A fraction of a second after the Big Bang, the entire cosmos resembled a fizzy drink: bubbles of new vacuum swelled and rapidly expanded everywhere. Their collisions, racing to nearly the speed of light, unleashed energy that no laboratory device can achieve. In this cosmic crucible, super-heavy par

In the hot early Universe, much like bubbles in boiling water, regions of a new state of space emerged. Some of them possessed an enormous number of microscopic states, rendering them quantum-entangled. The merger of such bubbles generates gravitational waves that carry information about their quant

Scientists discovered that an object's own gravity destabilizes quantum superposition: the object quickly loses its fuzziness and ends up in one place. The collapse time is inversely proportional to mass—for heavy bodies it's almost instantaneous. The effect works even in free fall, explaining why l

Using a new mathematical approach in gravity equations, scientists obtained an unusual type of charged black holes. Their thermodynamics strikingly resembles the behavior of water boiling: a critical point was found, and the ratio of pressure, volume, and temperature at it is constant. This brings t

A new hypothesis: dark matter acted like a sound amplifier. Its rhythmic oscillations, like microphone feedback on stage, turned faint magnetic seeds into the fields that shrouded galaxies. This explains the origin of cosmic magnetism without exotic additions.

Scientists have shown that the expanding universe can be described by the same equations as a steam engine. They calculated the efficiency of this 'cosmic motor' and confirmed: even the universe cannot break the laws of thermodynamics.

New research explains dark energy as a loss of spatial equilibrium. A tiny dilaton field, born from that event, drives the repulsive push. It resolves the conflict in expansion rate measurements and hints at the cosmos's future trajectory.

The stretching cosmos can conjure particles from nothing. But new simulations find that if those particles tug on each other, they slam the door on further creation—challenging the idea that more expansion means more particles. The early universe may have been far less crowded than we thought.

In the first moments after the Big Bang, the universe boiled, spawning bubbles of a new reality. Their collisions accelerated particles more powerfully than any collider. This is how super-heavy neutrinos were born – particles that explain both dark matter and the mysterious excess of matter, and th

Cosmology saw neutrinos as lighter than fluff, while lab experiments demanded noticeable weight. Decay into light invisibles resolves the conflict: some of the mass simply vanishes over time. Ordinary neutrinos, however, aren't fit for such a trick.

Cosmic 'boiling' in the early universe spawned bubbles of new vacuum and gravitational waves. Previous calculations of these waves were flawed due to their dependence on the frame of reference. A new method, borrowed from neutrino physics, eliminates this arbitrariness and promises a clearer picture

A new model shows how dark matter—a dust-like, invisible substance—could have emerged from the geometry of space during the rapid expansion. The mechanism works without fine-tuning: the right amount of matter automatically results from the expansion rate. After matter came to dominate over radiation

Inside language models like LLaMA lie tangled patterns, their strength depending on the training method. But to an outside observer, the model always yields the same result—much like a black hole that 'forgets' every detail of the matter it swallows. This explains why simple fine-tuning methods are

Scientists have built a model where dark energy loses its push. Instead of a shredding tear or a crunch into a point, the Universe’s expansion smoothly tapers off. The end result — a flat, table-smooth, empty space. Observations back this up.

Scientists have long debated: is dark energy constant or does it change? Fresh measurements point to a third path — it is conversing with dark matter. This turns a lone cosmic force into a duet of invisible interlocutors.

Like a fussy chef, dark matter can only 'cook' the Universe using certain particles. New work shows how strongly it prefers quarks (the building blocks of atomic nuclei) over leptons (electrons and their kin). Using the idea of culinary symmetries and their violations, scientists estimated how far o

In the first moments after the Big Bang, the Universe expanded at an enormous speed. If the expansion briefly paused, it generated powerful gravitational waves. Future detectors on Earth will be able to catch them, opening a window into an era hidden from any telescopes.

Scientists have proposed a model of a black hole where matter and light freeze at the edge, like a whirlpool gripped by ice. Its shadow betrays itself with unexpected brightness—a path to testing quantum gravity.

Scientists have found a new explanation for why measurements of the universe's expansion rate don't match: a tiny fraction of information may be 'erased' from its visible edge. This shortage creates extra energy that slightly accelerates expansion in the last few billion years, without affecting the

The diffusion equation was seen as a violator of relativity due to the instant spread of signals. It turned out to be an artifact of a rough approximation. On the micro level, everything is lawful, and paradoxes vanish with the right 'focus': track the particles, not the blurry picture.

A numerical experiment showed that in five-dimensional space, an ordinary black hole can reach maximum spin in finite time, as well as emerge from nothing. This is the first violation of the third law of black hole mechanics in pure gravity, forcing a rethinking of the evolution of such objects.

A single equation covers both billiards and quanta: the parameter κ acts like a speed knob, switching reality between two modes.

Scientists have modeled how streams of negative energy transform a black hole into a stable wormhole. Colliding, they create a through-tunnel that doesn't collapse. This is a new look at the birth of traversable portals.

When a black hole spins, it drags spacetime with it, like a spoon stirring thick honey. This cosmic vortex can alter the internal rhythm of quantum particles even when they feel no forces. Scientists have calculated that for a supermassive black hole this shift reaches 10²⁴ radians — a number that m

Chaplygin gas is an exotic medium that behaves like dark energy. When the universe contracts, it makes time flow backward for matter, turning a catastrophic collapse into a smooth bounce. Surprisingly, adding other particles doesn't disrupt the mechanism.

Astrophysicists have shown: the merger of two non-spinning black holes always produces an object with maximally chaotic movement of light rays at the horizon. The discovery helps better decode gravitational waves and test general relativity.

Physicists have proposed a model where the universe is born alongside its reflection. In this twin, time runs backward and left and right are swapped. A slight difference in the properties of twin particles could have given a tiny edge to matter over antimatter—thus stars and planets emerged.

If dark energy is not constant but evolves, it accumulates around black holes as a 'cosmic hair'. This hair alters the black hole's ringdown pattern after a collision. Observing these shifts with gravitational wave detectors like LIGO and LISA offers a powerful new way to measure dark energy's prope

Relativity and quantum mechanics diverge at the micro level. A new approach: if a quantum computer surpasses the classical speed limit of computation, it becomes a test of quantum gravity. A lab needs 500 logical qubits, the cosmos—1,600. Commercial roadmaps promise to reach that milestone soon.

On a quantum processor, they simulated a chaotic system of 8 entangled particles. It behaved like a hologram of a traversable wormhole. The sent signal passed through with different intensity depending on the sign — a key signature of such a tunnel. The experiment provides a way to test quantum grav

Klein's paradox about the birth of particles from emptiness gets a simple explanation: a tightly stretched rubber band snaps, creating whirls — a particle and an antiparticle. This image makes it clear that pair creation is the medium's reaction to extreme stress.

Analysis of black hole mergers confirmed Hawking's law and turned it into a selection tool: only theories without extra mathematical terms survive. Moreover, the law itself leads to the entropy formula and the idea that the horizon might not be just a smooth sphere.

Physicists replaced particles with numerical tables and ran a simulation. Following quantum rules, the tables arranged themselves into an expanding universe with three spatial dimensions and time — with no external guidance whatsoever. This result is like a winning jackpot: it explains how the Big B

Two ultra-cold atom clouds, known as Bose-Einstein condensates, become mysteriously linked when placed a hair's width apart. Their internal sound waves synchronize in a way only possible if gravity follows quantum rules, offering a powerful new path to glimpse the grainy fabric of spacetime.

The information paradox of black holes requires accounting for quantum effects in strong gravity. The semiclassical approach, proposed by Stephen Hawking, assumes that quantum fields on a fixed curved background lead to radiation and mass loss, but the backreaction of radiation on geometry is a crit

Quantum systems typically evolve toward equilibrium, losing all memory of their initial state. But occasionally, 'scars' are born — anomalously stable, weakly entangled states that challenge thermalization. New research shows that boson stars in anti-de Sitter space realize such scars, combining cha

Light curves around massive bodies — that's gravity's rule. The new method also factors in hadron clouds: specks of matter that slow light down and deepen the bend. A simple formula tied to cloud density will give astronomers sharper shots of black holes.

Black hole collisions transform the quantum whisper of spacetime into a roar that LIGO detectors can catch. Analysis shows that multi-particle graviton emission organizes into a generalized squeezed coherent state, exponentially amplifying fluctuations. Thanks to the double copy between QCD and grav

Black holes are not eternal: they slowly lose energy, a process first described by Stephen Hawking. New research shows that when a hole almost disappears, a tiny reverse object remains — a white hole. Like a dying ember, it slowly releases the captured information. This resolves the long-standing pa

Schwinger pair production in gauge fields reveals the unexpected depth of the vacuum: instead of simple entanglement, nonlocal magic arises—correlations that cannot be described without a full-fledged quantum computer. Holographic duality links this magic to the geometry of strings and black holes,

For the first time, nonlinear simulations of black hole flybys in modified gravity have been performed — test shots on the cosmic range. Comparing the scattering angles with analytics hit nearly the bullseye: the difference stayed within one degree. This paves the way for rapid gravitational wave te

Numerical simulations revealed how plasma gets stuck in the throat of a rotating wormhole, painting a thin luminous rim on its shadow and making it flicker with a period set by mass and spin. These signatures, observable by the Event Horizon Telescope at 230 GHz, turn active galactic nuclei into nat

It turns out: the birth of black holes in the first moments doesn’t disrupt the harmony of the large-scale structure. Small and large processes in the Universe are separated, like basses and flutes. Thus primordial black holes become legitimate candidates for dark matter.

A new leptogenesis scenario shows: heavy Majorana neutrinos, born from the vacuum by post-inflation expansion, gave rise to the entire baryon asymmetry. Their mass almost mystically matches the inflation scale — and it's no accident: the amplitude of primordial gravitational waves becomes a direct e

Quantum cosmology has long faced a paradox: the elegant idea of a universe born from 'nothing' relentlessly favored dreary microscopic worlds. New research shows that swapping the familiar sphere for a three-dimensional torus rewrites the script. Summing over all possible smooth fillings of the toru

The legacy of Penrose and Hawking asserted: the collapse of massive stars begets a singularity. But quantum evaporation casts doubt on the classical conditions, making us wonder if the core of a black hole is blurred by quantum fog. Engelhardt and Nagar put an end to it: by relaxing causality requir

Researchers modified the classic Bousso–Polchinski model, representing vacuum energy as the difference of contributions in flux space. As a result, small values of the cosmological constant form not spheres, but the thinnest 'waffles' — hyperdisks. Analysis of a database of 532 million Calabi–Yau ma

In a theory where spacetime remains a classical background and matter obeys quantum laws, the equations demand oscillations of the background. These oscillations come in two types: similar to gravitational waves and to compression waves. Comparison with LISA Pathfinder data and background gravitatio

Scientists test new theories of gravity to explain the accelerating expansion of the Universe without dark energy. They need to solve equations describing how tiny clumps after the Big Bang became galaxies. This used to take a lot of time. Now researchers connected a language model to a computer alg

Fuzzball black holes replace the event horizon with a dense, reflective boundary. New calculations show that entropy islands, meant to resolve the information paradox, behave erratically: they appear and vanish. In more realistic models, they don’t appear at all, hinting at the depth of the puzzle.

A new study proposes a simple observational test: any binary system with a negative-mass component must either produce an anomalous signal with a falling frequency or instantly fly apart. Not a single such 'note' has been found in the LIGO, Virgo, and KAGRA archives. The silence shuts down an entire

By comparing the redshift and blueshift of light from two symmetric points in orbit, scientists can calculate the mass and distance to a black hole. Gravity distorts the color, but a pair of beams allows its influence to be isolated. The method works even if the system is moving.

For a long time, dark energy was thought to be an unchanging force accelerating cosmic expansion. But the DESI instrument, by studying galaxy distributions, found that its influence has weakened by about 10% over billions of years. This undermines the foundations of the standard picture and paves th

The study unites two poles of quantum cosmology: tunneling from existing space and the no-boundary Hartle–Hawking state. Numerical solutions of Einstein's equations with an axion (or magnetic) charge and a scalar field revealed a family of Euclidean wormholes—their scale-factor profile shaped like a

A new theoretical work unites quantum mechanics and general relativity, showing that two parallel atomic lasers, unperturbed in the classical world, begin to diverge under the influence of quantum fluctuations of spacetime. Vacuum tremors of the metric give rise to an irreducible spread of trajector

Researchers studied the behavior of miniature black hole analogues built from superconductors. They found that in these systems, the dependence of temperature on internal state can be turned on and off—a feature unavailable to real black holes. This paves the way for an engineering approach to under

The cosmic microwave background not only brings a map of the early universe but also a subtle twist in polarization—just a few thousandths of a radian. For a long time, it was attributed to ultralight axions, but they clash with experiments. A new explanation is more elegant: the rotation arises whe

Just after the Big Bang, the universe was a hot particle soup. Neutrinos, escaping from it, were supposed to cool down to 1.96 degrees above absolute zero. New research shows that tiny clumps in that plasma, as they faded, cooled the neutrino background a bit more. The PTOLEMY experiment will try, f

Mysterious gamma-ray glow in the center of the Milky Way has been attributed for 15 years to either dark matter or pulsars. New work links it to the echo of an ancient jet: the same black hole Sagittarius A* ejected particles millions of years ago and inflated giant bubbles. Collisions of these part

Astrophysicists have proposed a new method for hunting dark matter — not searching for the black holes themselves, but listening to the quantum echo of gravity. In regions of ionized hydrogen, tidal forces from primordial black holes split the atomic level 2P₃/₂, turning a single 9.9 GHz absorption

New research shows: if the Universe accelerates its expansion and is built from a finite set of quantum states, any model of it stays ambiguous. The culprit is quantum measurement. An observer inside such a Universe can only access a minuscule share of the total information. That's an unbreakable bo

Usually, a black hole’s center is an abyss of infinite density. But quantum effects, like an invisible spring, create a cushion of resilience. Even without complex quantum gravity, simple laws of the microworld can turn black holes from dead ends into passages.

New calculations in quantum cosmology show that Euclidean wormholes with a throat — so-called 'wine glasses' — can dominate the path integral, setting the initial conditions for the Big Bang. Unlike the classical Hawking–Hartle scenario, these topologically nontrivial solutions naturally lead to inf

Physicists revisited Hawking's idea of the quantum birth of the universe in curved space. Comparing a fixed boundary to a moving one revealed a phase shift that depends on the number of dimensions. This quantum 'shadow' links the properties of universes and forces us to rethink why our world is the

The main obstacle for a graviton laser is that gravitational waves cannot be reflected: they pass through any substance. The solution lies in the Gertsenshtein effect. Under a powerful magnetic field, gravity particles temporarily become photons, which are easily reflected by ordinary mirrors. The r

The main formula for a black hole's thermal properties exactly matches the rule for how a charge creates an electric field. Translating from the language of gravity to the language of electricity brings us closer to a unified picture of the world.

Scientists have shown that a black hole's interior and its radiation aren't separate entities. They're intertwined like pages in a book. This connection resolves the contradiction: the horizon stays smooth, and information about infalling objects doesn't vanish.

The Universe is expanding, but measurements of the rate from early times and today disagree — this puzzle is called the Hubble tension. A new model introduces an invisible chameleon field that recently began nudging expansion further and adds invisible mass that holds galaxies together. Near Earth,

In a new cosmological model, the source of accelerated expansion is not a mysterious cosmological constant but the process of absorbing other universes. The merger intensity is set by a single constant g, calibrated by the local value of the Hubble constant. The computed evolution of the dark energy

A mechanism is proposed in which gravitational waves from bubble collisions during phase transitions and domain wall annihilation induce second-order scalar inhomogeneities. These inhomogeneities can collapse into primordial black holes of asteroid masses, fully accounting for dark matter. Model-ind

When ripples in spacetime strike a neutron star, it doesn't respond right away. First comes a sharp reflected pulse, then a series of fading echoes: the wave bounces around inside the ultra-dense sphere and emerges with a delay. A new method breaks this smeared signal into clear steps. From them, li

Brane theory predicts that a hidden dimension weakens gravity. For light black holes in a dense particle cloud, this prevents horizon formation. Their shadow grows while the light ring shrinks — astronomers are hunting for these signs.

Physicists found that the connection between two points on a donut exactly equals the length of the shortest path in the curved space within. This strict equality holds even for simple fields. Such an 'exact dictionary' simplifies calculations and hints at a deep link between quantum information and

For a long time, it remained a mystery why large objects don't exhibit quantum weirdness like the Schrödinger's cat superposition. It's all about internal noise: countless microscopic details, acting like interference, cause the superposition to collapse rapidly. Thus, Born's rule is derived from qu

Einstein’s gravity is reliable for stars but fails at the atomic scale. Physicists added an invisible scaffold field that dampens disruptive quantum fluctuations. The result is a theory that respects quantum laws while keeping things unchanged for large objects.

A new study shows that timeless equations are not flawed. They resemble a film reel where each frame exists independently, with no direction. But when a clock emerges within the system—like turning on a projector—the film starts rolling forward, and the familiar flow of time appears.

Colossal charged clumps from the early universe might have replaced dark energy, but calculations show the opposite. Plasma strips the charge, repulsion fades, and black holes become 'naked' — the simple model doesn't withstand scrutiny.

According to one hypothesis, the cosmos is not monolithic, but made of tiny quantum 'building blocks'. Previously, only their synchronized dance was studied. But new work shows: when you account for their inevitable jitter, something like sound waves emerges. This quantum ripple barely influences th

Black holes are the record holders for compressing matter. But physicists have found a way for neutron stars to beat them in density: just add tiny corrections to the theory of gravity that kick in under extreme conditions. Calculations show that such ultra-dense stars are stable and can produce gra

Gravitons — the quanta of gravity — split into two streams in curved spacetime depending on their spin. The effect, discovered by Michael Berry, causes particles with right- and left-handed spin to move in opposite directions, and for gravitons it is twice as strong as for light due to their double

Two entangled particles exchange energy: one gives, the other receives, but together they maintain balance. If you only watch the first, its oscillations seem eternal — the hidden partner acts as an invisible motor. This is reminiscent of time crystals — structures that change cyclically without ext

Scientists analyzed the universe's ancient light—the afterglow of the Big Bang—and found imprints of extra dimensions curled into microscopic rings. A new way to test string theory through observation.

Scientists have proposed a model of the early universe resembling a traffic jam followed by sudden acceleration. This shift in rhythm naturally smooths out large irregularities in the microwave background—the very ancient light that captured the newborn cosmos. It explains Planck satellite data with

String theory requires 26 dimensions, but our Universe is four-dimensional. A new mathematical approach describes how strings behave in spaces with a slightly different number of dimensions — a step toward bridging this gap.

In the dark universe, two types of particles are connected. When a massive particle oscillates, it makes a light particle vibrate, which changes light's properties. This cascade resonance could betray dark matter. Plot twist: the mechanism doesn't distinguish the direction of light's wobble — left a

Physicists have found that the shape of a water vortex's sound shadow can precisely measure its rotation speed. The main surprise: the mathematics of an ordinary sink plug and a giant black hole are the same.

Inflation—the Universe’s rapid ballooning—could act as a detector for special neutrinos. A special interaction, like a filter, amplifies their signal in the ancient light. This could explain the mystery of neutrino mass and point to new physics.

From a single entropy 'recipe,' physicists derived both Einstein's equations and a method to calculate energy at the boundaries of space—like at the edge of a black hole. The approach even works for surfaces moving at light speed, and explains why energy can vanish at boundaries. It’s a unified view

When the Universe perishes in the fire of a singularity, matter particles (fermions) behave like fireproof seeds. Their mathematical description avoids infinities, unlike that of bosons—the carriers of forces. This means matter could survive the end of the world and seed a new one.

Scientists propose a new take on dark matter: it might be made of ordinary neutrinos. Their quantum transformations in curved space create extra gravity, like ghostly glue. This holds stars at the edges of galaxies without needing new particles.

Scientists tested hundreds of warp-shell configurations that compress and stretch space. At the boundary between shell and void, the laws of ordinary physics were always violated. Even a static warp bubble is impossible without exotic matter.

When two black holes collide, the resulting hole trembles, and this trembling tells us about its mass and spin. The new SPRING method accounts for not only the final ringdown but also how the holes circled before the impact. This allows us to more precisely decode the hole’s properties and test the

Physicists have shown that accelerating two sensors can extract quantum entanglement from the vacuum. If space is curled into a ring or two versions of it are superimposed, the connection strengthens. This reveals how the vacuum stores information and promises new quantum technologies.

Physicists examined two classic time machine designs within extended gravity featuring an extra field. The time loops didn’t collapse, and the chronology protection hypothesis failed. Even souped-up gravity doesn’t forbid time travel, which matters for testing modified theories.

Researchers have proposed a model where cosmic history repeats exactly. Due to quantum cyclicity, the Universe returns to the Big Bang without having time to spawn hordes of phantom consciousnesses. This explains why we observe an orderly world rather than fleeting flashes of intelligence in the voi

Scientists considered a theory of gravity where matter curves space more strongly. In this model, rotation prevents the wormhole from collapsing, eliminating the need for exotic matter. Since almost all cosmic bodies rotate, such tunnels could form naturally. They would be betrayed by a double shado

Scientists compared images of an Ellis-Bronnikov wormhole and a Schwarzschild black hole with accreting plasma. It turns out the central shadow and photon ring of the wormhole are noticeably brighter—light passes through the throat, adding from the far side of the disk. The result matches Event Hori

The classical light cone is a crystal-clear boundary between what can be causally connected and what remains forever separated. But quantum field theory in curved spacetime paints a different picture: gravitons, the quanta of the gravitational field, tremble even in vacuum, causing spacetime itself

In the early Universe, the Big Bang could have spawned cosmic strings—one-dimensional defects whose enormous energy can still shake spacetime. Their decay through quantum tunneling dictates the gravitational signal that detectors will pick up. New lattice modeling has shown: the string's finite thic

Astronomers are increasingly finding giant black holes in the early universe, with masses reaching a billion suns. Ordinary gas accretion can't 'fatten' them up fast enough. A new hypothesis introduces an extra dimension: our brane-universe and an invisible donor brane intersect at a shared horizon.

If a particle has no precise position, as if smeared across space, then light cones—the boundaries of causality—also lose their sharpness. Because of this, events can both have and not have a causal connection, erasing the line between past and future.

Scientists have rigorously described how gravity dampens quantum 'miracles'. The result: in terrestrial labs, superpositions die from molecular impacts, while the gravitational whisper remains inaudible. It grows only like a faint echo — each additional kilometer adds as much as the first meter.

Recent observations suggest that dark energy, the force accelerating the universe’s expansion, is not constant. Around 6 billion years ago, it crossed a critical threshold, making its behavior even more puzzling. Scientists came up with a simple idea: the dark energy field experiences a tiny amount

Standard cosmology stumbles over a 120-order abyss: by quantum calculations, vacuum energy should incinerate the universe, yet we see only a smoldering ember. The Running Vacuum Model (RVM) bridges the gap: it teaches spacetime to “remember” the expansion rate. In curved geometry, quantum fluctuatio

Electrons and muons act like tiny magnets. Their magnetic properties differ slightly from the predictions of a simple theory. Scientists have figured out how to combine these two numbers into a new one, where many complex interferences cancel out. Only the contribution from unknown forces or particl

The Ph-ΛsCDM model describes the behavior of a special field that smoothly transitions from an attractive to a repulsive force. This resolves contradictions between different measurements of the expansion rate and predicts a stable future without the 'Big Rip'.

A new method will allow catching particles with a microscopic charge, born in supernova explosions. They arrive after neutrinos, like a delayed wave. Perhaps dark matter is made of exactly such particles.

Physicists calculated that gravity can entangle particles, but not instantly. The delay depends on distance, like ripples running across water. The effect is tiny, but it can be slightly amplified. This confirms the quantum nature of gravity.

Physicists have shown: if gravity is classical and matter is quantum, then a qubit solves problems beyond any computer. This would violate a fundamental limit on computation. Since we don't see that, gravity must be quantum.

A new hypothesis suggests the vacuum is a network of invisible threads. When a star collapses, the threads tangle into a dense knot—a fuzzball—whose surface imprints everything that fell in. Nature saves information from disappearing.

The 'dark bubble' model explains why the Universe is expanding faster and faster. It suggests a hidden dimension about a micron thick. At such distances, gravity should weaken dramatically, linking the microcosm to cosmology and providing testable predictions.

Physicists have found a way to steer a warp drive without resorting to fantastical negative-energy matter. The ship ejects light or gravitational waves, like a rocket, and changes course. The price of the maneuver is a loss of some mass, but it all comes down to the energy budget, not unseen substan

After the Big Bang, the universe may have been stuck in a false vacuum — a fragile state like an unpopped bubble. A rare true-vacuum bubble could then erupt, causing a colossal expansion that stretched space itself. Now, physicists recreated this on a chip with 4000 tiny magnets, showing how one bub

In frozen quantum objects like crystals, chaotic disorder has been discovered. Previously, it was only seen in systems continuously shaken by external forces. Scientists used a clever trick — a quantum clock mechanism — to 'awaken' chaos in stillness. This discovery links the microworld with black h

Physicists investigated boson stars in teleparallel gravity, where a scalar field is non-minimally coupled to spacetime torsion. It turned out that excited states of these objects can have negative energy density, violating all four classical energy conditions. The compactness of these stars exceeds

What lies beyond three dimensions? Theories with extra spatial dimensions predict the birth of massive particles in the young Universe. Using the cosmic microwave background as a kind of 'spectrograph,' scientists analyzed data from the Planck satellite looking for imprints of Kaluza–Klein gravitons

Black holes store more information than the infalling matter provides. This excess 'information load' shifts the frequency of gravitational waves during mergers, revealing their origin—stellar or quantum.

Analysis of data from the Planck satellite and ground-based telescopes using symbolic regression has revealed oscillations of the form cos(B/k) in the primordial perturbation spectrum. This inverse pattern is weakly preferred over standard alternatives and could be a remnant of a period of ultra-fas

In the standard cosmological model, two epochs of the Universe speak different languages: the temperature of the cosmic microwave background demands one expansion rate, while supernova explosions demand another. The discrepancy has surpassed the five-sigma threshold, becoming a true crisis. The ECDM

The mysterious force accelerating the universe turns out to be fickle. In a new model, dark energy is like steam that partially condenses into 'droplets' when cooled. Massive galaxy clusters act as refrigerators, their gravity creating pressure differences. This solves recent anomalies in supernova

Using a simplified model, researchers determined the delay with which information emerges from behind the cosmological horizon. Quantum particles born near the horizon carry data not instantly: first, a characteristic time passes — roughly 1/8 of the horizon’s traversal period. This discovery helps