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Heat conduction induced by non-Gaussian athermal fluctuations.
Kiyoshi Kanazawa1, Takahiro Sagawa, Hisao Hayakawa
1Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502, Japan.
Summary
Non-Gaussian noises in athermal systems alter heat conduction. New terms are needed for Fourier
Area of Science:
- Thermodynamics
- Statistical Physics
- Non-equilibrium systems
Background:
- Fourier's law describes heat conduction.
- The fluctuation theorem analyzes heat current fluctuations.
- Athermal systems exhibit unique thermal properties.
Purpose of the Study:
- Investigate heat conduction driven by non-Gaussian noises in athermal environments.
- Determine the impact of non-Gaussian noise on heat current and thermodynamic laws.
Main Methods:
- Theoretical analysis of heat transport.
- Incorporation of non-Gaussian noise properties into thermodynamic frameworks.
Main Results:
- Modified Fourier's law and fluctuation theorem required for non-Gaussian noise.
- Heat current average and fluctuation depend on noise intensity and non-Gaussianity.
- Demonstrated absence of the zeroth law of thermodynamics in these systems.
Conclusions:
- Non-Gaussian noise fundamentally changes heat conduction in athermal systems.
- Current thermodynamic laws need revision for such systems.
- The zeroth law's applicability is limited in non-Gaussian athermal environments.
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