Tian Chen, Xiang-Bin Wang, Jie Ren
We study the quantum geometric heat flux in the nonequilibrium spin-boson model. By adopting the noninteracting-blip approximation, we show that there exists the geometric heat flux only when the two level system is nondegernate. Moreover, the pumping, no pumping, and dynamic control of geometric heat flux are discussed in detail, compared to the results with Redfield-weak coupling approximation. In particular, two system-bath couplings modulation induced geometric energy tansfer is identified, which is exclusive to quantum transport in the strong system-bath coupling regime.
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http://arxiv.org/abs/1212.0067
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