On the relaxation of quantal time-dependent harmonic excitations

The approach to equilibrium of a quantal harmonic mode that exhibits time-dependent inertial or stiffness parameters, irreversibly coupled to a fermionic heat bath, is examined. It is assumed that the relaxation dynamics is described by a master equation derived in prior work, here endowed with a pa...

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Autor principal: Hernández, E.S.
Formato: JOUR
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_03784371_v132_n1_p28_Hernandez
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Sumario:The approach to equilibrium of a quantal harmonic mode that exhibits time-dependent inertial or stiffness parameters, irreversibly coupled to a fermionic heat bath, is examined. It is assumed that the relaxation dynamics is described by a master equation derived in prior work, here endowed with a parametric time dependence in the microscopically derived transition rates. Exact and adiabatic solutions of the master equation are compared in a range of temperatures and for a selection of mass variation laws established in a preceding paper. © 1985.