Quantum Energy Current Induced Coherence in a Spin Chain under Non-Markovian Environments
dc.contributor.author | Ablimit, Arapat | |
dc.contributor.author | He, Run-Hong | |
dc.contributor.author | Xie, Yang-Yang | |
dc.contributor.author | Wu, Lian-Ao | |
dc.contributor.author | Wang, Zhao-Ming | |
dc.date.accessioned | 2022-11-21T14:09:23Z | |
dc.date.available | 2022-11-21T14:09:23Z | |
dc.date.issued | 2022-10-01 | |
dc.identifier.citation | Entropy 24(10) : (2022) // Article ID 1406 | es_ES |
dc.identifier.issn | 1099-4300 | |
dc.identifier.uri | http://hdl.handle.net/10810/58465 | |
dc.description.abstract | We investigate the time-dependent behaviour of the energy current between a quantum spin chain and its surrounding non-Markovian and finite temperature baths, together with its relationship to the coherence dynamics of the system. To be specific, both the system and the baths are assumed to be initially in thermal equilibrium at temperature Ts and Tb, respectively. This model plays a fundamental role in study of quantum system evolution towards thermal equilibrium in an open system. The non-Markovian quantum state diffusion (NMQSD) equation approach is used to calculate the dynamics of the spin chain. The effects of non-Markovianity, temperature difference and system-bath interaction strength on the energy current and the corresponding coherence in cold and warm baths are analyzed, respectively. We show that the strong non-Markovianity, weak system-bath interaction and low temperature difference will help to maintain the system coherence and correspond to a weaker energy current. Interestingly, the warm baths destroy the coherence while the cold baths help to build coherence. Furthermore, the effects of the Dzyaloshinskii–Moriya (DM) interaction and the external magnetic field on the energy current and coherence are analyzed. Both energy current and coherence will change due to the increase of the system energy induced by the DM interaction and magnetic field. Significantly, the minimal coherence corresponds to the critical magnetic field which causes the first order phase transition. | es_ES |
dc.description.sponsorship | This research was funded by Natural Science Foundation of Shandong Province grant number ZR2021LLZ004, and grant PID2021-126273NB-I00 funded by MCIN/AEI/10.13039/501100011033, and by “ERDF A way of making Europe” and the Basque Government through grant number IT1470-22. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | MDPI | es_ES |
dc.relation | info:eu-repo/grantAgreement/MICINN/PID2021-126273NB-I00 | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | |
dc.subject | quantum coherence | es_ES |
dc.subject | energy current | es_ES |
dc.subject | non-Markovian dynamics | es_ES |
dc.title | Quantum Energy Current Induced Coherence in a Spin Chain under Non-Markovian Environments | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.date.updated | 2022-10-26T11:08:12Z | |
dc.rights.holder | © 2022 by the authors.Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/ 4.0/). | es_ES |
dc.relation.publisherversion | https://www.mdpi.com/1099-4300/24/10/1406 | es_ES |
dc.identifier.doi | 10.3390/e24101406 |
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Except where otherwise noted, this item's license is described as © 2022 by the authors.Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/ 4.0/).