Simple

The Quantum Mpemba Paradox: Why Hotter Cools Faster ⚡ экспресс

Original: "Quantum Many-Body Mpemba Effect through Resonances"
· Shion Yamashika, Ryusuke Hamazaki
arXiv:2603.11788 · 2026-03-12 · CC BY · ⏱ 1 min · Statistical Mech Quantum Gases Quantum Physics
Physicists have uncovered the mechanism of the quantum Mpemba effect — the path from chaos to order is shorter than it seems.
Abstract

Does hot water take longer to cool? Not necessarily. Quantum systems are different: equilibrium is reached faster from a 'wrong' start. The secret is decay modes: the less the initial pattern overlaps with the dominant one, the faster it's forgotten. Like applause: random clapping dies away faster than synchronized clapping. Complete symmetry breaking gives record relaxation. Why does chaos win?

Links in the knowledge graph 1

Hot tea normally takes longer to cool than warm tea, but water sometimes breaks this rule: back in the 1960s, schoolboy Erasto Mpemba noticed that hot ice cream freezes faster than cold. This paradox has moved into the quantum world: a collection of particles can settle down faster if it was initially more excited. The quantum Mpemba effect is like an orchestra tuning up faster after a loud symphony.

The key is in the rhythms of chaos. Every quantum system 'sounds' at particular frequencies, and the loudest rhythm slows down its journey to calm. By suppressing it, physicists made the system rapidly increase entropy — the measure of disorder — and reach equilibrium many times faster. It's akin to a conductor damping the dominant note, and the other instruments instantly blending into harmony.

The effect is amplified by breaking time symmetry — making it so the past cannot be reconstructed. In experiments on particle chains inspired by number theory, equilibrium was reached almost instantaneously. This paves the way for faster quantum computers, where unwanted 'memories' are erased without delay.

🎯 To test the effect, scientists used states inspired by number theory — and equilibrium was reached tens of times faster.

Scientists
Jacob BekensteinStephen HawkingLudwig BoltzmannEdward WittenJuan MaldacenaGerard 't Hooft
Tags
entropy Water
Laws
second law of thermodynamicsBekenstein-Hawking entropyBoltzmann distributionfirst law of thermodynamicsAdS/CFT correspondenceholographic principle
Original: arXiv:2603.11788 · CC BY · bridge42worlds