Nonequilibrium statistical mechanics is a research area focused on the microscopic foundations and emergent behavior of systems driven away from thermodynamic equilibrium by external forces, gradients, or time-dependent protocols. It extends equilibrium statistical mechanics by analyzing transport processes, relaxation dynamics, fluctuation–dissipation relations, and entropy production in classical and quantum many-body systems. The field encompasses linear and nonlinear response theory, fluctuation theorems, large deviation theory, and stochastic thermodynamics, providing rigorous frameworks to quantify irreversibility, work, heat, and efficiency in driven systems ranging from molecular-scale engines and soft matter to plasmas and complex networks.
Harnessing quantum states that avoid thermalization enables energy harvesters to surpass traditional thermodynamic limits such as Carnot efficiency, report researchers from Japan. The team developed a new approach using a ...
Condensed Matter
Oct 3, 2025
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A new study addresses a foundational problem in the theory of driven quantum matter by extending the Středa formula to non-equilibrium regimes. It demonstrates that a superficially trivial "sum of zeros" encodes a universal, ...
Condensed Matter
Sep 11, 2025
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Phases of matter are the basic states that matter can take—like water that can occur in a liquid or ice phase. Traditionally, these phases are defined under equilibrium conditions, where the system is stable over time. But ...
Quantum Physics
Sep 10, 2025
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191
In everyday life, continuously doing work on a system is found to heat it up. Rubbing your hands together warms them. Hammering a piece of metal makes it hot. Even without knowing the equations, we learn from experience: ...
Quantum Physics
Aug 14, 2025
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Prof. Michael Murrell's group (lead author Zachary Gao Sun, graduate student in physics) in collaboration with Prof. Garegin Papoian's group from the University of Maryland at College Park has found critical phenomena (self-organized ...
General Physics
Jul 28, 2025
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Researchers from the University of Tokyo in collaboration with Aisin Corporation have demonstrated that universal scaling laws, which describe how the properties of a system change with size and scale, apply to deep neural ...
General Physics
Jul 18, 2025
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Landauer's principle is a thermodynamics concept also relevant in information theory, which states that erasing one bit of information from an information system results in the dissipation of at least a specific amount (i.e., ...
Statistical mechanics is one of the pillars of modern physics. Ludwig Boltzmann (1844–1906) and Josiah Willard Gibbs (1839–1903) were its primary formulators. They both worked to establish a bridge between macroscopic physics, ...
Condensed Matter
May 27, 2025
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The Mpemba effect is an intriguing physical phenomenon that causes some systems to cool faster when they are hot than when they are warm or colder. This effect was observed in various systems, including water, which sometimes ...
Phase transitions, like water freezing into ice, are a familiar part of our world. But in quantum systems, they can behave even more dramatically, with quantum properties such as Heisenberg uncertainty playing a central role. ...
Superconductivity
Mar 10, 2025
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