Abstract.
Within the Lindblad formalism we consider an interacting spin chain coupled locally to heat baths. We investigate the dependence of the energy transport on the type of interaction in the system as well as on the overall interaction strength. For a large class of couplings we find a normal heat conduction and confirm Fourier's Law. In a fully quantum mechanical approach linear transport behavior appears to be generic even for small quantum systems.
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According to the Grüneisen formula, thermal expansion, an often used indicator for temperature, is taken to be proportional to the free energy, \(F(T)\), see [15], p. 64 (2001)
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Received: 14 May 2003, Published online: 11 August 2003
PACS:
05.60.Gg Quantum transport - 05.30.-d Quantum statistical mechanics - 05.70.Ln Nonequilibrium and irreversible thermodynamics
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Michel, M., Hartmann, M., Gemmer, J. et al. Fourier's Law confirmed for a class of small quantum systems. Eur. Phys. J. B 34, 325–330 (2003). https://doi.org/10.1140/epjb/e2003-00228-x
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DOI: https://doi.org/10.1140/epjb/e2003-00228-x