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.
In the everyday world, governed by classical physics, the concept of equilibrium reigns. If you put a drop of ink into water, it will eventually evenly mix. If you put a glass of ice water on the kitchen table, it will eventually ...
Quantum Physics
Feb 18, 2026
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Technologies for energy storage as well as biological systems such as the network of neurons in the brain depend on driven electrolytes that are traveling in an electric field due to their electrical charges. This concept ...
Bio & Medicine
Feb 12, 2026
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35
In order to build the computers and devices of tomorrow, we have to understand how they use energy today. That's harder than it sounds. Memory storage, information processing, and energy use in these technologies involve ...
General Physics
Feb 9, 2026
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221
Time-dependent driving has become a powerful tool for creating novel nonequilibrium phases such as discrete time crystals and Floquet topological phases, which do not exist in static systems. Breaking continuous time-translation ...
Quantum Physics
Jan 30, 2026
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71
Light and matter can remain at separate temperatures even while interacting with each other for long periods, according to new research that could help scale up an emerging quantum computing approach in which photons and ...
Condensed Matter
Jan 21, 2026
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71
In a recent paper, SFI Professor David Wolpert, SFI Fractal Faculty member Carlo Rovelli, and physicist Jordan Scharnhorst examine a longstanding, paradoxical thought experiment in statistical physics and cosmology known ...
General Physics
Jan 21, 2026
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Scientists have taken another major step toward creating stable quantum computers. Using a specialized quantum computer chip (an essential component of a quantum computer) as a kind of tiny laboratory, a team led by Pan Jianwei ...
When describing collective properties of macroscopic physical systems, microscopic fluctuations are typically averaged out, leaving a description of the typical behavior of the systems. While this simplification has its advantages, ...
General Physics
Nov 28, 2025
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146
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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359
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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