Steady state quantum transport through an anharmonic oscillator strongly coupled to two heat reservoirs
Abstract
We investigate the transport properties of an anharmonic oscillator, modeled by a single-site Bose-Hubbard model, coupled to two different thermal baths using the numerically exact thermofield based chain-mapping matrix product states (TCMPS) approach. We compare the effectiveness of TCMPS to probe the nonequilibrium dynamics of strongly interacting system irrespective of the system-bath coupling against the global master equation approach in Gorini-Kossakowski-Sudarshan-Lindblad form. We discuss the effect of on-site interactions, temperature bias as well as the system-bath couplings on the steady state transport properties. Last we also show evidence of non-Markovian dynamics by studying the non-monotonicity of the time evolution of the trace distance between two different initial states.
Keywords
Cite
@article{arxiv.2004.05017,
title = {Steady state quantum transport through an anharmonic oscillator strongly coupled to two heat reservoirs},
author = {Tianqi Chen and Vinitha Balachandran and Chu Guo and Dario Poletti},
journal= {arXiv preprint arXiv:2004.05017},
year = {2020}
}
Comments
13 pages, 7 figures