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Nonequilibrium heat capacity.

Dibyendu Mandal1

  • 1Department of Physics, University of Maryland, College Park, Maryland 20742, USA and Department of Atmospheric and Oceanic Sciences, University of Colorado, Boulder, Colorado 80309, USA.

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|February 4, 2014
PubMed
Summary
This summary is machine-generated.

This study extends equilibrium thermodynamics to nonequilibrium steady states (NESS) by proposing a modified heat capacity definition. This approach ensures thermodynamic consistency with steady state Shannon entropy.

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Area of Science:

  • Thermodynamics
  • Statistical Mechanics
  • Physical Chemistry

Background:

  • Extending equilibrium thermodynamics to nonequilibrium steady states (NESS) is crucial for advancing thermodynamics and statistical mechanics.
  • Current understanding of NESS is limited, particularly regarding thermodynamic properties like heat capacity.

Purpose of the Study:

  • To propose a modified definition for heat capacity applicable to NESS.
  • To ensure thermodynamic consistency between NESS heat capacity and steady state Shannon entropy.

Main Methods:

  • Development of a modified definition for heat capacity.
  • Analysis of the relationship between the proposed heat capacity and steady state Shannon entropy.

Main Results:

  • A modified heat capacity definition is proposed for NESS.
  • The modified definition maintains the equilibrium relationship between heat capacity and Shannon entropy in steady states.

Conclusions:

  • The proposed modified heat capacity provides a thermodynamically consistent framework for NESS.
  • This work facilitates a deeper understanding and application of thermodynamics in nonequilibrium systems.