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Effective efficiency (spin-off: physicality of time reversal)

Grant number: 20/03708-8
Support Opportunities:Scholarships abroad - Research Internship - Doctorate (Direct)
Effective date (Start): April 01, 2021
Effective date (End): February 28, 2022
Field of knowledge:Physical Sciences and Mathematics - Physics - Condensed Matter Physics
Principal Investigator:Carlos Eduardo Fiore dos Santos
Grantee:Pedro Eduardo Harunari
Supervisor: Massimiliano Esposito
Host Institution: Instituto de Física (IF). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Research place: Université du Luxembourg, Luxembourg  
Associated to the scholarship:17/24567-0 - Phase transition, temporal disorder and entropy production in systems with inversion symmetry, BP.DD


In this project we propose the study of the maximal efficiency and its attainability in multiterminal machines (machines that have more than one input and one more than one output) when not all degrees of freedom are available. We employ the formalism of the effective thermodynamic theory developed by Polettini and Esposito. We intend to apply the main results to the study of the efficiency of the stochastic pump as a heat engine, two coupled quantum dots in contact with a dissipative bath of phonons or photons and to other example systems (e.g. ADP to ATP synthesis in large metabolic cycles).Existence of a physical rationale behind the effective efficiency resides on the possibility to give a physical interpretation to time-reversed dynamics, an extremely simple and fundamental question in stochastic thermodynamics that surprisingly has never been addressed.As a possible spin-off project we will explore this question and its possible ramifications. (AU)

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Scientific publications (5)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
FIORE, C. E.; HARUNARI, PEDRO E.; NOA, C. E. FERNANDEZ; LANDI, GABRIEL T.. urrent fluctuations in nonequilibrium discontinuous phase transition. Physical Review E, v. 104, n. 6, . (17/24567-0, 18/02405-1, 20/03708-8, 19/14072-0)
MAMEDE, IAGO N.; HARUNARI, PEDRO E.; AKASAKI, BRUNO A. N.; PROESMANS, KAREL; FIORE, C. E.. btaining efficient thermal engines from interacting Brownian particles under time-periodic driving. Physical Review E, v. 105, n. 2, . (20/03708-8, 17/24567-0, 21/03372-2, 20/12021-6, 18/02405-1)
HARUNARI, PEDRO E.; DUTTA, ANNWESHA; POLETTINI, MATTEO; ROLDAN, EDGAR. What to Learn from a Few Visible Transitions' Statistics?. PHYSICAL REVIEW X, v. 12, n. 4, p. 27-pg., . (17/24567-0, 20/03708-8)
HARUNARI, PEDRO E.; GARILLI, ALBERTO; POLETTINI, MATTEO. Beat of a current. PHYSICAL REVIEW E, v. 107, n. 4, p. 5-pg., . (20/03708-8)
HARUNARI, PEDRO E.; FILHO, FERNANDO S.; FIORE, CARLOS E.; ROSAS, ALEXANDRE. Maximal power for heat engines: Role of asymmetric interaction times. PHYSICAL REVIEW RESEARCH, v. 3, n. 2, . (18/02405-1, 20/03708-8, 17/24567-0)

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