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Comparative Study of Simulation of Temperature Rise in Ring Main Unit
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Published on: July 5, 2024

Fluctuation relation for heat.

Jae Dong Noh1, Jong-Min Park

  • 1Department of Physics, University of Seoul, Seoul 130-743, Republic of Korea.

Physical Review Letters
|September 26, 2012
PubMed
Summary
This summary is machine-generated.

We derived a modified fluctuation relation for heat dissipation in nonequilibrium systems. This accounts for energy changes, offering new insights into thermodynamic processes.

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Area of Science:

  • Thermodynamics
  • Statistical Mechanics
  • Non-equilibrium Physics

Background:

  • The fluctuation theorem governs nonequilibrium work.
  • Heat dissipation differs from work due to energy changes.

Purpose of the Study:

  • To present a modified fluctuation relation for heat dissipation.
  • To investigate the impact of energy change correlations on heat dissipation.

Main Methods:

  • Derivation for overdamped Langevin equation systems.
  • Testing in a linear diffusion system.

Main Results:

  • Heat satisfies a modified fluctuation relation.
  • Correlations between heat and energy change are significant, even in the long-time limit.

Conclusions:

  • The derived fluctuation relation provides a more accurate description of heat dissipation.
  • Understanding these correlations is crucial for nonequilibrium thermodynamics.