Quantum thermodynamics aspects with a thermal reservoir based on PT -symmetric Hamiltonians

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Federal do ABC (UFABC)-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorSantos, Jonas F.G.-
Autor(es): dc.creatorLuiz, Fabricio S. [UNESP]-
Data de aceite: dc.date.accessioned2022-08-04T22:11:33Z-
Data de disponibilização: dc.date.available2022-08-04T22:11:33Z-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2021-08-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1088/1751-8121/ac13de-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/222146-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/222146-
Descrição: dc.descriptionWe present results concerning aspects of quantum thermodynamics under the background of non-Hermitian quantum mechanics for the dynamics of a quantum harmonic oscillator. Since a better control over the parameters in quantum thermodynamics processes is desired, we use concepts from collisional model to introduce a simple prototype of thermal reservoir based on PT -symmetric Hamiltonians and study its effects under the thermalization process of a single harmonic oscillator prepared in a displaced thermal state. We verify that controlling the PT -symmetric features of the reservoir allows to reverse the heat flow between system and reservoir, as well as to preserve the coherence over a longer period of time and reduce the entropy production. Furthermore, we considered a modified quantum Otto cycle in which the standard hot thermal reservoir is replaced by the thermal reservoir based on PT -symmetric Hamiltonians. By defining an effective temperature depending on the PT -symmetric parameter, it is possible to interchange the quantum Otto cycle configuration from engine to refrigerator by varying the PT -symmetric parameter. Our results indicate that PT -symmetric effects could be useful to achieve an improvement in quantum thermodynamics protocols such as coherence protection and entropy production reduction.-
Descrição: dc.descriptionCentro de Ciências Naturais e Humanas Universidade Federal do ABC, Avenida dos Estados 5001, São Paulo-
Descrição: dc.descriptionFaculdade de Ciências Universidade Estadual Paulista, Rua Quirino de Andrade 215-
Descrição: dc.descriptionFaculdade de Ciências Universidade Estadual Paulista, Rua Quirino de Andrade 215-
Idioma: dc.languageen-
Relação: dc.relationJournal of Physics A: Mathematical and Theoretical-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectNon-Hermitian quantum mechanics-
Palavras-chave: dc.subjectPT-symmetry-
Palavras-chave: dc.subjectQuantum thermodynamics-
Título: dc.titleQuantum thermodynamics aspects with a thermal reservoir based on PT -symmetric Hamiltonians-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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