Heat Flux and Entropy Produced by Thermal Fluctuations

2013/01/31 by S. Ciliberto, Sergio Ciliberto, Alberto Imparato +2 · 6 citations
Engineering · Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #Brownian motion #Conservation law #Energy flux #Entropy (arrow of time) #Entropy production #Heat flux #Heat transfer #Physics #Quantum Electrodynamics and Casimir Effect #Quantum mechanics #Statistical physics #Thermal #Thermal Radiation and Cooling Technologies #Thermal fluctuations #Thermodynamics #cond-mat.stat-mech

paper · pdf · doi:10.1103/physrevlett.110.180601

arxiv created 2013/04/06 · openalex publication_date 2013/04/30 · arxiv updated 2015/06/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We report an experimental and theoretical analysis of the energy exchanged between two conductors kept at different temperature and coupled by the electric thermal noise. Experimentally we determine, as functions of the temperature difference, the heat flux, the out-of-equilibrium variance, and a conservation law for the fluctuating entropy, which we justify theoretically. The system is ruled by the same equations as two Brownian particles kept at different temperatures and coupled by an elastic force. Our results set strong constraints on the energy exchanged between coupled nanosystems held at different temperatures.

Citations

• The Feynman Lectures on Physics
• Work fluctuations for a Brownian particle between two thermostats
• Power and Heat Fluctuation Theorems for Electric Circuits
• Modul media pembelajaran : modul 4 : media pembelajaran pandang dengar / Sihkabuden
• Nonequilibrium fluctuations in a resistor
• Thermal Agitation of Electric Charge in Conductors
• Thermodynamics of a Colloidal Particle in a Time-Dependent Nonharmonic Potential
• Thermal Agitation of Electricity in Conductors
• Stochastic thermodynamics, fluctuation theorems and molecular machines
• Classical and Quantum Fluctuation Theorems for Heat Exchange
• Microscopic Analysis of a Thermal Brownian Motor

Cited by

• Statistical properties of the energy exchanged between two heat baths coupled by thermal fluctuations
• Heat transport in harmonic oscillator systems with thermal baths: application to optomechanical arrays
• Autonomous out-of-equilibrium Maxwell's demon for controlling the energy fluxes produced by thermal fluctuations
• Universal theory of efficiency fluctuations
• Inertial effects on the Brownian gyrator
• Thermal Ratchet Effect in Confining Geometries

Related

• Near-field heat transfer between disordered conductors
• Non-equilibrium Thermodynamics and Fluctuations
• Nanothermodynamics: There's plenty of room on the inside
• Observing temperature fluctuations of a mesoscopic electron system
• Energy fluctuations in simple conduction models