urrent fluctuations in nonequilibrium discontinuous phase transition

Autor(es)

Fiore, C. E. ^[1] ; Harunari, Pedro E. ^{[1, 2]} ; Noa, C. E. Fernandez ^[1] ; Landi, Gabriel T. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Fis, BR-05314970 Sao Paulo - Brazil

^[2] Univ Luxembourg, Phys & Mat Sci Res Unit, Complex Syst & Stat Mech, L-1511 Luxembourg - Luxembourg

• Tipo de documento: Artigo Científico
• Fonte: Physical Review E; v. 104, n. 6 DEC 17 2021.
• Citações Web of Science: 0

Resumo

Discontinuous phase transitions out of equilibrium can be characterized by the behavior of macroscopic stochastic currents. But while much is known about the average current, the situation is much less understood for higher statistics. In this paper, we address the consequences of the diverging metastability lifetime-a hallmark of discontinuous transitions-in the fluctuations of arbitrary thermodynamic currents, including the entropy production. In particular, we center our discussion on the conditional statistics, given which phase the system is in. We highlight the interplay between integration window and metastability lifetime, which is not manifested in the average current, but strongly influences the fluctuations. We introduce conditional currents and find, among other predictions, their connection to average and scaled variance through a finite-time version of large deviation theory and a minimal model. Our results are then further verified in two paradigmatic models of discontinuous transitions: Schlogl's model of chemical reactions, and a 12-state Potts model subject to two baths at different temperatures. (AU)

• Processo FAPESP: 17/24567-0 - Transição de fase, desordem temporal e produção de entropia em sistemas com simetria de inversão
• Beneficiário: Pedro Eduardo Harunari
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto
• Processo FAPESP: 18/02405-1 - Desordem temporal e produção de entropia em sistemas irreversíveis com simetria de inversão
• Beneficiário: Carlos Eduardo Fiore dos Santos
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 20/03708-8 - Termodinâmica efetiva (spin-off: física da reversão temporal)
• Beneficiário: Pedro Eduardo Harunari
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Doutorado Direto
• Processo FAPESP: 19/14072-0 - Termodinâmica de precisão em dispositivos quânticos fora do equilíbrio
• Beneficiário: Gabriel Teixeira Landi
• Modalidade de apoio: Bolsas no Exterior - Pesquisa