2026-04-17T02:55:20Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/1281452025-12-04T20:46:28Zcom_2072_1057col_2072_478822col_2072_478917

Equilibrium and nonequilibrium thermodynamics of a photon gas in the near field Pérez Madrid, Agustín Lapas, Luciano Calheiros Rubí Capaceti, José Miguel Termodinàmica del desequilibri Fotons Nonequilibrium thermodynamics Photons In this paper, we study the near-field thermodynamics of a photon gas at equilibrium as well as out-of-equilibrium in the presence of dissipative effects. As a consequence of Heisenberg's uncertainty principle, we are able to eliminate the low-frequency modes in both cases, providing an analytical expression for the near-field entropy. In addition, we obtain the entropic-force contributions to the Casimir effect. At zero temperature the well-known 1/l^4 behavior of the pressure is obtained. In the nonequilibrium case, we compute the entropy production, showing that the excess of heat in each bodies must be dissipated into the respective thermal reservoirs. 2019-02-11T18:20:25Z 2019-02-11T18:20:25Z 2019-01-18 2019-02-11T18:20:25Z info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion 1951-6355 https://hdl.handle.net/2445/128145 685458 eng Versió postprint del document publicat a: https://doi.org/10.1140/epjst/e2018-800053-9 European Physical Journal-Special Topics, 2019 https://doi.org/10.1140/epjst/e2018-800053-9 (c) EDP Sciences, 2019 info:eu-repo/semantics/openAccess 9 p. application/pdf EDP Sciences Articles publicats en revistes (Física de la Matèria Condensada)