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.
In thermodynamics, an "adiabatic process" is a system change that transfers no heat in or out of the system. Any and all energy change in that system are therefore accomplished by doing work on the system, work being action ...
Theoretical physicists in the US have discovered a "speed limit" on the time taken for quantum information to spread through larger systems. Publishing their results in Physical Review Letters, Amit Vikram and colleagues ...
A new study published in Nature Communications has shown that in the asymptotic limit, extracting the maximum possible work from many copies of a quantum system does not require knowing exactly what state that system is in.
A research team has, for the first time in the world, elucidated the microscopic mechanism by which quantum order is lost and collapses in "open quantum environments" existing in nature. Since perfectly isolated quantum systems ...
Quantum Physics
Apr 4, 2026
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Physicists have developed a new theoretical framework which unifies a wide array of seemingly unrelated "Mpemba effects": counterintuitive cases where systems driven further from equilibrium relax faster than those closer ...
In new research published in Physical Review X, scientists have designed quantum control protocols that generate processes more consistent with time flowing backward than forward. The protocols—techniques to control quantum ...
Quantum Physics
Mar 20, 2026
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Quantum catalysts are specialized resources that enable quantum state transformations previously thought impossible, holding promise for advancements in quantum computing and thermodynamics. A recent international study has ...
Quantum Physics
Mar 17, 2026
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Over the past decades, energy engineers have developed increasingly advanced battery technologies that can store more energy, charge faster and maintain their performance for longer. In recent years, some researchers have ...
An international study has revealed a surprising connection between quantum physics and the theoretical models underlying artificial intelligence. The study results from a collaboration between the Institute of Nanotechnology ...
Optics & Photonics
Feb 24, 2026
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A team of physicists from the University of Ottawa, led by Neda Boroumand, have developed a new theoretical model that shines new light on how scientists understand the way lasers interact with dense matter, such as solids ...
Condensed Matter
Feb 17, 2026
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