Powerful ordered collective heat engines

Autor(es)

Filho, Fernando S. ; Forao, Gustavo A. L. ; Busiello, Daniel M. ; Cleuren, B. ; Fiore, Carlos E.

• Tipo de documento: Artigo Científico
• Fonte: PHYSICAL REVIEW RESEARCH; v. 5, n. 4, p. 12-pg., 2023-10-20.

Resumo

We introduce a class of stochastic engines in which the regime of units operating synchronously can boost the performance. Our approach encompasses a minimal setup composed of N interacting units placed in contact with two thermal baths and subjected to a constant driving worksource. The interplay between unit synchronization and interaction leads to an efficiency at maximum power between the Carnot eta(c) and the Curzon-Ahlborn bound eta(CA). Moreover, these limits can be respectively saturated maximizing the efficiency, and by simultaneous optimization of power and efficiency. We show that the interplay between Ising-like interactions and a collective ordered regime is crucial to operate as a heat engine. The main system features are investigated by means of a linear analysis near equilibrium, and developing an effective discrete-state model that captures the effects of the synchronous phase. The robustness of our findings extends beyond the all-to-all interactions and paves the way for the building of promising nonequilibrium thermal machines based on ordered structures. (AU)

• Processo FAPESP: 21/03372-2 - Termodinâmica estocástica de transições de fase e de sistemas periódicos
• Beneficiário: Carlos Eduardo Fiore dos Santos
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 21/13287-2 - Abordagem colisional para máquinas térmicas interagentes
• Beneficiário: Gustavo Antonio Leme Forão
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica