Nonequilibrium Temperature for Open Boson and Fermion Systems

Simple item page
dc.creatorKim, Sang Pyo
dc.date2001-04-17
dc.date2001-06-22
dc.date.accessioned2026-07-07T03:44:21Z
dc.date.available2026-07-07T03:44:21Z
dc.descriptionThe effective theory of an open boson or fermion system is studied, which evolves out of equilibrium with time-dependent Hamiltonian $\hat{H}(t)$. A measure of nonequilibrium temperature for the open system evolving from an equilibrium is proposed as the time-averaged energy expectation value $T(t) = T_i(\bar{< \hat{H} (t) >_Ψ}/ \bar{< \hat{I} (t) >_Ψ})$, where $\hat{I} (t)$, the action operator, satisfies the quantum Liouville-von Neumann equation and determines the true density operator. It recovers the result for the adiabatic (quasi-equilibrium) and nonadiabatic (out of equilibrium) evolution from one static Hamiltonian to another and takes into account the particle production due to the intermediate processes.
dc.descriptionLaTex 11 pages, no figure; qualitative argument is added for the temperature relation of thermal equilibrium at high temperature and references are added
dc.identifierhttps://arxiv.org/abs/hep-ph/0104167
dc.identifierhttp://arxiv.org/abs/hep-ph/0104167
dc.identifierJ.Korean Phys.Soc. 41 (2003) 643-648
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/40527
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectStatistical Mechanics
dc.subjectQuantum Physics
dc.titleNonequilibrium Temperature for Open Boson and Fermion Systems
dc.typetext

Files

Collections

arXiv