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arXiv · 1405.6358

Heat transfer in the spin-boson model: A comparative study in the incoherent tunneling regime

Dvira Segal
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Abstract

We study the transfer of heat in the non-equilibrium spin-boson model with an Ohmic dissipation. In the non-adiabatic limit we derive a formula for the thermal conductance based on a rate equation formalism at the level of the non-interacting blip approximation, valid for temperatures $T>T_K$, with $T_K$ as the Kondo temperature. We evaluate this expression analytically assuming either weak or strong couplings, and demonstrate that our results agree with exact relations. Far-from-equilibrium situations are further examined, showing a close correspondence to the linear response limit.

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Dvira Segal. 2014-05-25. Heat transfer in the spin-boson model: A comparative study in the incoherent tunneling regime. https://doi.org/10.1103/physreve.90.012148

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