Quantum fluids and solids are many-body physical systems in which quantum mechanical effects, such as wavefunction coherence, zero-point motion, and quantization of circulation, dominate macroscopic behavior. Quantum fluids include systems like superfluid helium and ultracold atomic Bose–Einstein condensates, characterized by frictionless flow, quantized vortices, and collective excitations described by Bogoliubov theory or hydrodynamic formalisms. Quantum solids, such as solid helium, exhibit significant zero-point motion, tunneling, and in some regimes potential supersolid behavior with simultaneous crystalline order and superfluid-like response. These systems serve as platforms for studying strongly correlated quantum phases, emergent quasiparticles, and quantum phase transitions under controlled thermodynamic conditions.
Bloch oscillations are periodic oscillations of quantum particles in a repeating energy "landscape" (e.g., a crystal lattice) that are subjected to a constant force. These particle motions have been the focus of numerous ...
Oxygen, the colorless and odorless gas that is essential to the survival of humans and other living organisms, is estimated to make up around 21% of Earth's atmosphere. While the primary properties of oxygen are now well ...
For several decades, a central puzzle in quantum physics has remained unsolved: Could electrons behave like a perfect, frictionless fluid with electrical properties described by a universal quantum number?
Nanophysics
Sep 1, 2025
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In everyday life, all matter exists as either a gas, liquid, or solid. In quantum mechanics, however, it is possible for two distinct states to exist simultaneously. An ultracold quantum system, for instance, can exhibit ...
Soft Matter
Aug 28, 2025
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Van Gogh's "The Starry Night" has stirred the souls of art lovers for over a century. Now, its swirling skies may also speak to physicists, as it echoes the patterns of quantum turbulence.
Quantum Physics
Aug 8, 2025
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Quantum field theory (QFT) is a physics framework that describes how particles and forces behave based on principles rooted in quantum mechanics and Albert Einstein's special relativity theory. This framework predicts the ...
Researchers at the University of California, Irvine have discovered a new state of quantum matter. The state exists within a material that the team reports could lead to a new era of self-charging computers and ones capable ...
General Physics
Jul 25, 2025
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An international team of scientists led by Rice University's Pengcheng Dai has confirmed the existence of emergent photons and fractionalized spin excitations in a rare quantum spin liquid. Published in Nature Physics on ...
Condensed Matter
Jun 23, 2025
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An international research collaboration featuring scientists from the FAMU-FSU College of Engineering and the National High Magnetic Field Laboratory has discovered a fundamental universal principle that governs how microscopic ...
Soft Matter
Jun 4, 2025
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When two-dimensional electron systems are subjected to magnetic fields at low temperatures, they can exhibit interesting states of matter, such as fractional quantum Hall liquids. These are exotic states of matter characterized ...
