| Texto completo | |
| Autor(es): |
Varizi, Adalberto D.
[1, 2]
;
Vieira, Andre P.
[1]
;
Cormick, Cecilia
[3, 4]
;
Drumond, Raphael C.
[5]
;
Landi, Gabriel T.
[1]
Número total de Autores: 5
|
| Afiliação do(s) autor(es): | [1] Univ Sao Paulo, Inst Fis, BR-05314970 Sao Paulo - Brazil
[2] Univ Fed Minas Gerais, Inst Ciencias Exatas, Dept Fis, BR-30123970 Belo Horizonte, MG - Brazil
[3] Consejo Nacl Invest Cient & Tecn, Inst Fis Enrique Gaviola, Ciudad Univ, X5016LAE, Cordoba - Argentina
[4] Univ Nacl Cordoba, Ciudad Univ, X5016LAE, Cordoba - Argentina
[5] Univ Fed Minas Gerais, Inst Ciencias Exatas, Dept Matemat, BR-30123970 Belo Horizonte, MG - Brazil
Número total de Afiliações: 5
|
| Tipo de documento: | Artigo Científico |
| Fonte: | PHYSICAL REVIEW RESEARCH; v. 2, n. 3 AUG 20 2020. |
| Citações Web of Science: | 0 |
| Resumo | |
The irreversible work during a driving protocol constitutes one of the most widely studied measures in nonequilibrium thermodynamics, as it constitutes a proxy for entropy production. In quantum systems, it has been shown that the irreversible work has an additional, genuinely quantum mechanical contribution, due to coherence produced by the driving protocol. The goal of this paper is to explore this contribution in systems that undergo a quantum phase transition. Substantial effort has been dedicated in recent years to understanding the role of quantum criticality in work protocols. However, practically nothing is known about how coherence contributes to it. To shed light on this issue, we study the entropy production in infinitesimal quenches of the one-dimensional XY model. We find that coherence plays a significant role in the entropy production and can even account for most of it in certain situations. Moreover, at low temperatures, the coherence presents a finite cusp at the critical point, whereas the entropy production diverges logarithmically. For high temperatures, however, the coherence presents a kink at the critical point indicating the quantum phase transition that occurs only at T = 0. Alternatively, if the quench is performed in the anisotropy parameter, then we find that there are situations where all of the entropy produced is due to quantum coherences. (AU) | |
| Processo FAPESP: | 17/07248-9 - Dinâmica de cadeias quânticas de spins aperiódicas |
| Beneficiário: | Andre de Pinho Vieira |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 17/50304-7 - Entropy production in non-equilibrium quantum processes: from foundations to quantum technologies |
| Beneficiário: | Gabriel Teixeira Landi |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 17/07973-5 - Termodinâmica e tecnologias de informação utilizando sistemas quânticos de variáveis contínuas |
| Beneficiário: | Gabriel Teixeira Landi |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 18/12813-0 - Termodinâmica quântica de sistemas bosônicos |
| Beneficiário: | Gabriel Teixeira Landi |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |