Energy Flux in Hierarchical Equations of Motion Method and Its Application to a Three-Level Heat Engine

Autor:	Zhou, Yun, Xiao, Tie-Jun, Cao, Jun, Yan, Yun-An
Rok vydání:	2019
Předmět:	Condensed Matter - Statistical Mechanics
Druh dokumentu:	Working Paper
Popis:	We derive the formula of energy flux for the hierarchical equations of motion (HEOM) method with the help of stochastic decoupling technique. The resulting expression is a combination of the terms in the first two layers of the hierarchy. The formula is applied to a three-level "heat engine" coupled respectively to three baths, of which two for heat sources and one for work dump. All the three baths are modeled by collections of harmonic oscillators. We illustrate the proper parameterizing to converge the third bath to the "work-dump" limit. As an example, the effect of the engine parameters on working efficiency is studied. Comment: 17pages, 5 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1902.08781 Zobrazit plný text záznamu View this record from Arxiv