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Li L, Zou J, Li H, et al. Effect of coherence of nonthermal reservoirs on heat transport in a microscopic collision model. Phys Rev E. 2018;97(2):022111doi: 10.1103/PhysRevE.97.022111.
Li, L., Zou, J., Li, H., Xu, B. M., Wang, Y. M., & Shao, B. (2018). Effect of coherence of nonthermal reservoirs on heat transport in a microscopic collision model. Physical review. E, 97(2), 022111. https://doi.org/10.1103/PhysRevE.97.022111
Li, Lei, et al. "Effect of coherence of nonthermal reservoirs on heat transport in a microscopic collision model." Physical review. E vol. 97,2 (2018): 022111. doi: https://doi.org/10.1103/PhysRevE.97.022111
Li L, Zou J, Li H, Xu BM, Wang YM, Shao B. Effect of coherence of nonthermal reservoirs on heat transport in a microscopic collision model. Phys Rev E. 2018 Feb;97(2):022111. doi: 10.1103/PhysRevE.97.022111. PMID: 29548129.
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Phys Rev E. 2018 Feb;97(2):022111. doi: 10.1103/PhysRevE.97.022111.

Effect of coherence of nonthermal reservoirs on heat transport in a microscopic collision model.

Physical review. E

Lei Li, Jian Zou, Hai Li, Bao-Ming Xu, Yuan-Mei Wang, Bin Shao

Affiliations

  1. School of Physics, Beijing Institute of Technology, Beijing 100081, People's Republic of China.
  2. Southwest Institute of Technical Physics, Chengdu, Sichuan 610041, People's Republic of China.
  3. School of Information and Electronic Engineering, Shandong Technology and Business University, Yantai 264000, People's Republic of China.
  4. School of Physics, Qufu Normal University, Qufu 273165, People's Republic of China.

PMID: 29548129 DOI: 10.1103/PhysRevE.97.022111

Abstract

We investigate the heat transport between two nonthermal reservoirs based on a microscopic collision model. We consider a bipartite system consisting of two identical subsystems, and each subsystem interacts with its own local reservoir, which consists of a large collection of initially uncorrelated ancillas. Then a heat transport is formed between two reservoirs by a sequence of pairwise collisions (intersubsystem and subsystem-local reservoir). In this paper we consider two kinds of the reservoir's initial states: the thermal state and the state with coherence whose diagonal elements are the same as that of the thermal state and the off-diagonal elements are nonzero. In this way, we define the effective temperature of the reservoir with coherence according to its diagonal elements. We find that for two reservoirs having coherence the direction of the steady current of heat is different for different phase differences between the two initial states of two reservoirs, especially the heat can transfer from the "cold reservoir" to the "hot reservoir" in the steady regime for particular phase difference. In the limit of the effective temperature difference between the two reservoirs ΔT→0, for most of the phase differences, the steady heat current increases with the increase of effective temperature until it reaches the high effective temperature limit, while for the thermal state or particular phase difference the steady heat current decreases with the increase of temperature at high temperatures, and in this case the conductance can be obtained.

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