Decoherence and Dissipation for a Quantum System Coupled to a Local Environment

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dc.creatorGallis, Michael R.
dc.date1993-10-19
dc.date.accessioned2026-07-07T04:19:46Z
dc.date.available2026-07-07T04:19:46Z
dc.descriptionDecoherence and dissipation in quantum systems has been studied extensively in the context of Quantum Brownian Motion. Effective decoherence in coarse grained quantum systems has been a central issue in recent efforts by Zurek and by Hartle and Gell-Mann to address the Quantum Measurement Problem. Although these models can yield very general classical phenomenology, they are incapable of reproducing relevant characteristics expected of a local environment on a quantum system, such as the characteristic dependence of decoherence on environment spatial correlations. I discuss the characteristics of Quantum Brownian Motion in a local environment by examining aspects of first principle calculations and by the construction of phenomenological models. Effective quantum Langevin equations and master equations are presented in a variety of representations. Comparisons are made with standard results such as the Caldeira-Leggett master equation.
dc.description6 Pages (LaTeX), to appear in the Proceedings of the Third International Workshop on Squeezed States and Uncertainty Relations
dc.identifierhttps://arxiv.org/abs/hep-th/9310120
dc.identifierhttp://arxiv.org/abs/hep-th/9310120
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/53695
dc.subjectHigh Energy Physics - Theory
dc.subjectCondensed Matter
dc.subjectGeneral Relativity and Quantum Cosmology
dc.titleDecoherence and Dissipation for a Quantum System Coupled to a Local Environment
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