Entropy Production in Non-Markovian Collision Models: Information Backflow vs. System-Environment Correlations

Entropy

Barış Çakmak¹  Hüseyin T. Şenyaşa²  Göktuğ Karpat³  Şahinde Kesgin⁴ 

[1] College of Engineering and Natural Sciences, Bahçeşehir University, Beşiktaş, Istanbul 34353, Turkey;Department of Physics, Faculty of Science and Letters, Istanbul Technical University, Maslak, Istanbul 34469, Turkey;Faculty of Arts and Sciences, Department of Physics, İzmir University of Economics, İzmir 35330, Turkey;TEBIP High Performers Program, Board of Higher Education of Turkey, Istanbul University, Fatih, Istanbul 34452, Turkey;

关键词: entropy production;    open quantum systems;    collision models;   

DOI  :  10.3390/e24060824

来源: DOAJ

【 摘 要 】

We investigate the irreversible entropy production of a qubit in contact with an environment modelled by a microscopic collision model in both Markovian and non-Markovian regimes. Our main goal is to contribute to the discussions on the relationship between non-Markovian dynamics and negative entropy production rates. We employ two different types of collision models that do or do not keep the correlations established between the system and the incoming environmental particle, while both of them pertain to their non-Markovian nature through information backflow from the environment to the system. We observe that as the former model, where the correlations between the system and environment are preserved, gives rise to negative entropy production rates in the transient dynamics, the latter one always maintains positive rates, even though the convergence to the steady-state value is slower as compared to the corresponding Markovian dynamics. Our results suggest that the mechanism underpinning the negative entropy production rates is not solely non-Markovianity through information backflow, but rather the contribution to it through established system-environment correlations.

【 授权许可】

Unknown