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Scientist

Lev Landau

1908–1968 · Theoretical physics, condensed matter, hydrodynamics, quantum theory
Soviet theoretical physicist, founder of a powerful school of theoretical physics. Contributed to quantum mechanics, condensed matter physics (superfluidity), nuclear physics, astrophysics. Nobel Prize laureate for the theory of liquid helium.

Biography

Born in 1908 in Baku. At age 14 entered Baku University, then transferred to Leningrad University, which he graduated in 1927. Trained in Europe under Bohr, Pauli, Heisenberg. Returning to the USSR, worked in Kharkov and Moscow, founded the Institute for Physical Problems. Arrested in 1938, released thanks to Kapitza's intervention. Developed the famous course of theoretical physics with Lifshitz. Received the Nobel Prize in 1962 for the theory of superfluidity of helium. A severe car accident in 1962 cut short his scientific work.

Key discoveries

💡 Landau created a humorous scale of physicists' genius, giving Newton 0, Einstein 0.5, and himself 2.5. He was known for his sharp tongue and intolerance of ignorance. When asked why he didn't write textbooks alone, he replied: 'I find it boring to write the same thing twice, so I dictate to Lifshitz.'
"He described science as what we know and what we are just beginning to understand, and thought a physicist must be crazy enough to assume things that boggle the mind."
Concepts
heliumneutron starQuantum Fieldsuperposition
Laws
quantum Hall effect
Scientists
Subrahmanyan ChandrasekharJocelyn Bell BurnellAlain AspectFred HoyleMargaret BurbidgeDavid DeutschLouis de BroglieWolfgang Pauli

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The Magnetic Knot That Refuses to Come Undone
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Quantum Physics2025-12-191 minarXiv:2512.17318express
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Quantum Gases2026-01-021 minarXiv:2601.00682express
Atoms on a Ring: The Way Up
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Bo-Wen Liu·Ke-Ji Chen·Fan Wu·Wei Yi
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Materials2026-01-032 minarXiv:2601.01059express
Light Makes a Crystal Conduct Current
A crystal without a center of symmetry is like a staircase where all the steps are tilted in the same direction: electrons, given a kick by light, roll predominantly in one direction. This is how a direct current is born — the photogalvanic effect.
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Biological Physics2026-01-041 minarXiv:2601.01560express
A Switch Protein: How to Catch a Quantum Current
Every breath you take and every muscle twitch runs on a stream of electrons flowing through proteins inside your cells. These proteins aren't static: they constantly change shape, like a spring that compresses and releases. But until now, no one has seen exactly how these movements open or close the path for electrons.
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Stellar2026-01-061 minarXiv:2601.03344express
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In a hot gas of charged particles — plasma — chaotic electric fields work like a sieve. A slow particle gets surrounded by a cloud of opposite charges, which cancels the external field. A fast one sheds this armor and gets accelerated.
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Optics2026-01-081 minarXiv:2601.04933express
How a Magnesium Atom in Silicon Holds a 20-Millisecond Pause
In a silicon crystal, the stuff of microchips, there sometimes sits a foreign atom, like magnesium. It behaves like a tiny magnet with several 'pointer positions.' If you illuminate such a crystal with a short flash of light, the atom momentarily gets excited, then returns to its ground state.
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Classical Physics2026-01-111 minarXiv:2601.06855express
Sound Passes Through a Wall
Sound in a thin plate behaves like ripples on water: it travels, reflects off edges, and changes shape. But sound has a peculiar trait: it can pass through places where waves are forbidden to exist. It's as if ripples on a pond suddenly vanished before a stone barrier and reappeared on the other side, without going around it.
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Mesoscale2026-01-112 minarXiv:2601.06927express
Traps at the Interface: How Defects Mess with Quantum Chips
A quantum chip is like a musical instrument that goes out of tune at the slightest touch. In devices made from strained germanium, a material where atoms are slightly stretched for better conductivity, the main source of off-key notes is defects at the interface between the semiconductor and the insulating layer.
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Galaxies2026-01-122 minarXiv:2601.07907express
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A hair dryer aimed at a block of ice strips vapor and droplets from its surface, and the ice slowly melts. The wind from the center of our Galaxy works in much the same way: it picks up cold gas clouds and carries them away, heating and shredding them along the way. Astronomers decided to systematically search this flow for molecules, the coldest and densest form of gas, for the first time.
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Exoplanets2026-01-121 minarXiv:2601.07983express
When the Sun Dived into a Cloud
As it travels through the Galaxy, the Solar System occasionally dives into thick interstellar clouds — clumps of tenuous hydrogen and dust.
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Plasma Physics2026-01-131 minarXiv:2601.08329express
The Solar Wind Whispers: How to Catch Its Wave
The scorching gas streaming from the Sun is not a continuous flow but rather a soup of charged particles. In this soup, waves constantly boil up: electric fields flare and fade like ripples on water from a tossed stone. One such wave is the ion-ion acoustic wave.
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Strongly Correlated2026-01-141 minarXiv:2601.09847express
Metal Locks Magnetic Flux
Metals are full of free electrons: they dart between atoms like a swarm of bees around a hive. If you poke such a metal with a thin magnetic filament, the electrons start to feel its field. A new calculation shows they don't just go around the field; they trap it inside, like a cork sealing water in a bottle.
Zohar Komargodski·Fedor K. Popov
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