Dynamic control of quantum geometric heat flux in a nonequilibrium spin-boson model
Abstract
We study the quantum geometric heat flux in the nonequilibrium spin-boson model. By adopting the noninteracting-blip approximation that is able to accommodate the strong system-bath coupling, we show that there exists a nonzero geometric heat flux only when the two-level system is nondegenerate. 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, the geometric energy transfer induced by modulation of two system-bath couplings is identified, which is exclusive to quantum transport in the strong system-bath coupling regime.
Keywords
Cite
@article{arxiv.1212.0067,
title = {Dynamic control of quantum geometric heat flux in a nonequilibrium spin-boson model},
author = {Tian Chen and Xiang-Bin Wang and Jie Ren},
journal= {arXiv preprint arXiv:1212.0067},
year = {2013}
}
Comments
5 pages, 4 figures. with updated figures and discussions. See also http://link.aps.org/doi/10.1103/PhysRevB.87.144303