Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7376412 | Physica A: Statistical Mechanics and its Applications | 2018 | 14 Pages |
Abstract
We investigate nonequilibrium energy transfer in a single-site Bose-Hubbard model coupled to two thermal baths. By including a quantum kinetic equation combined with full counting statistics, we investigate the steady state energy flux and noise power. The influence of the nonlinear Bose-Hubbard interaction on the transfer behaviors is analyzed, and the nonmonotonic features are clearly exhibited. Particularly, in the strong on-site repulsion limit, the results become identical with the nonequilibrium spin-boson model. We also extend the quantum kinetic equation to study the geometric-phase-induced energy pump. An interesting reversal behavior is unraveled by enhancing the Bose-Hubbard repulsion strength.
Related Topics
Physical Sciences and Engineering
Mathematics
Mathematical Physics
Authors
Xu-Min Chen, Chen Wang, Ke-Wei Sun,