Thermodynamic system

Artificial intelligence

Geometry

Physics

Mathematics

Non-equilibrium thermodynamics

Equilibrium thermodynamics

Class (philosophy)

Theoretical physics

Quantum mechanics

Perspective (graphical)

Thermodynamic equilibrium

Computer science

Statistical physics

Physical system

Dissipation

Autocatalytic reaction

Thermodynamics

Nature Physics

In equilibrium thermodynamics, there exists a well-established connection between dynamical fluctuations of a physical system and the dissipation of its energy into an environment. However, few similarly quantitative tools are available for the description of physical systems out of equilibrium. Here, we offer our perspective on the recent development of a new class of inequalities known as thermodynamic uncertainty relations, which have revealed that dissipation constrains current fluctuations in steady states arbitrarily far from equilibrium. We discuss the stochastic thermodynamic origin of these inequalities, and highlight recent efforts to expand their applicability, which have focused on connections between current fluctuations and the fluctuation theorems. A new class of inequalities known as thermodynamic uncertainty relations provides quantitative tools for the description of physical systems out of equilibrium. A perspective is offered on these results and their future developments.

Thermodynamic uncertainty relations constrain non-equilibrium fluctuations