Quantum statistical mechanics is a research area that extends classical statistical mechanics to systems governed by quantum theory, providing a rigorous framework for describing the equilibrium and nonequilibrium properties of many-body quantum systems. It formulates ensembles using density operators on Hilbert spaces, incorporates quantum indistinguishability and statistics (Bose–Einstein, Fermi–Dirac), and analyzes phase transitions, transport, and thermalization in interacting systems. The field employs operator algebras, spectral theory, and path integrals to study micro- to macroscopic behavior, including topics such as open quantum systems, quantum chaos, entanglement in many-body states, and the foundations of irreversibility and emergent thermodynamic laws from underlying unitary dynamics.
Physicists from the Cavendish Laboratory in Cambridge have created the first two-dimensional version of the Bose glass, a novel phase of matter that challenges statistical mechanics. The details of the study have been published ...
General Physics
Sep 11, 2024
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321
Photon-number distributions of various light sources have been studied extensively. However, little is known about the statistical distribution of electrons emitted under the effect of intense light.
Optics & Photonics
May 13, 2024
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786
In daily life, when two objects are "indistinguishable," it's due to an imperfect state of knowledge. As a street magician scrambles the cups and balls, you could, in principle, keep track of which ball is which as they are ...
Optics & Photonics
May 8, 2024
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381
Bartosz Regula from the RIKEN Center for Quantum Computing and Ludovico Lami from the University of Amsterdam have shown, through probabilistic calculations, that there is indeed, as had been hypothesized, a rule of entropy ...
Quantum Physics
May 1, 2024
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1005
A breakthrough in theoretical physics is an important step toward predicting the behavior of the fundamental matter of which our world is built. It can be used to calculate systems of enormous quantities of quantum particles, ...
Condensed Matter
Apr 4, 2024
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424
Add a dash of creamer to your morning coffee, and clouds of white liquid will swirl around your cup. But give it a few seconds, and those swirls will disappear, leaving you with an ordinary mug of brown liquid.
Condensed Matter
Jan 24, 2024
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420
A new study in Physical Review Letters illuminates the intricacies of energy exchanges within bipartite quantum systems, offering profound insights into quantum coherence, pure dephasing effects, and the potential impact ...
Researchers are actively engaged in the dynamic manipulation of quantum systems and materials to realize significant energy management and conservation breakthroughs.
National University of Singapore researchers have predicted that an exotic state of matter known as a Bose-Einstein condensate can exist at relatively high temperatures (around 50 K to 100 K) in systems comprising organic ...
Nanophysics
Dec 6, 2021
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388
