Symmetry breaking and entropy production during the evolution of spinor Bose-Einstein condensate driven by coherent atom beam

The spinor condensate with spin states degenerated in the ground spin-space provides a unique platform for investigating the edge of quantum mechanics and statistical physics. We study the evolution of the condensate under the scattering of a coherent atom beam. The time-dependent magnetization, ent...

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Bibliographic Details
Published inarXiv.org
Main Authors Xu, Yixin, Zeng, Zhongda, Domanski, Zbignew, Li, Zhibing
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 18.09.2019
Subjects
Bose-Einstein condensates
Broken symmetry
Coherent scattering
Entropy
Evolution
Physics - Quantum Gases
Physics - Quantum Physics
Quantum entanglement
Quantum mechanics
Time dependence
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Summary:The spinor condensate with spin states degenerated in the ground spin-space provides a unique platform for investigating the edge of quantum mechanics and statistical physics. We study the evolution of the condensate under the scattering of a coherent atom beam. The time-dependent magnetization, entanglement entropy, thermal entropy and the entropy production rate are calculated. A novel spontaneous symmetry breaking is found during the evolution, It is shown that the stationary spin distribution can be controlled by the incoming coherent spin state of the incident atom beam, therefore the atom-condensate scattering provides a new way to probe the spin distribution of the condensate
ISSN:2331-8422
DOI:10.48550/arxiv.1909.08225