Dissipative Quantum Systems in ThermoField Dynamics

Details Dissipative Quantum Systems in ThermoField Dynamics Dissipative Quantum Systems in ThermoField Dynamics

2009-11-06

arxiv.org/abs/0911.1321v1

Physics

Quantum Physics

6 pages. Work presented in the Workshop on Quantum Nonstationary Systems, held in the International Centre for Condensed Matte

Scientific paper

We investigate a class of microscopic systems in interaction with a macroscopic system in thermal equilibrium, following the construction of Dalibard, Dupont-Roc and Cohen-Tannoudji (DDC). By considering self-adjoint operators as elements of Schwinger's Measurement Algebra (SMA), we construct statistical mean values of the relevant observables as matrix elements in a suitable operator basis, which correspond to the vacuum states of ThermoField Dynamics (TFD).

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