Entropy production of a small quantum system under strong coupling with an environment: A computational experiment

Ketan Goyal, Xian He and Ryoichi Kawai

Physica A: Statistical Mechanics and its Applications, 2020, vol. 552, issue C

Abstract: Many theoretical expressions of dissipation along non-equilibrium processes have been proposed. However, they have not been fully verified by experiments. Especially for systems strongly interacting with environments the connection between theoretical quantities and standard thermodynamic observables are not clear. We have developed a computer simulation based on a spin-boson model, which is in principle exact and suitable for testing the proposed theories. We have noted that the dissipation obtained by measuring conventional thermodynamic quantities deviates from the second law of thermodynamics presumably due to the strong coupling. We found that simple correction to entropy makes it more consistent with the second law under the strong coupling regime. This observation appears to be consistent with the theory based on the potential of mean force.

Keywords: Irreversibility; Entropy production; Strong coupling; System–environment correlation; Quantum thermodynamics; Non-Markovian dynamics; Hierarchical equations of motion (search for similar items in EconPapers)
Date: 2020
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S037843711931502X
Full text for ScienceDirect subscribers only. Journal offers the option of making the article available online on Science direct for a fee of $3,000

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:552:y:2020:i:c:s037843711931502x

DOI: 10.1016/j.physa.2019.122627

Access Statistics for this article

Physica A: Statistical Mechanics and its Applications is currently edited by K. A. Dawson, J. O. Indekeu, H.E. Stanley and C. Tsallis

More articles in Physica A: Statistical Mechanics and its Applications from Elsevier
Bibliographic data for series maintained by Catherine Liu ().