Dephasing of a particle in a dissipative environment

Doron Cohen; Baruch Horovitz

doi:10.1088/1751-8113/40/41/002

Dephasing of a particle in a dissipative environment

Department of Physics

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6 Scopus citations

Abstract

The motion of a particle in a ring of length L is influenced by a dirty metal environment whose fluctuations are characterized by a short correlation distance ℓ ≪ L. We analyze the induced decoherence process, and compare the results with those obtained in the opposing Caldeira-Leggett limit (ℓ ≫ L). A proper definition of the dephasing factor that does not depend on a vague semiclassical picture is employed. Some recent Monte Carlo results about the effect of finite temperatures on 'mass renormalization' in this system are illuminated.

Original language	English
Pages (from-to)	12281-12297
Number of pages	17
Journal	Journal of Physics A: Mathematical and Theoretical
Volume	40
Issue number	41
DOIs	https://doi.org/10.1088/1751-8113/40/41/002
State	Published - 12 Oct 2007

ASJC Scopus subject areas

Statistical and Nonlinear Physics
Statistics and Probability
Modeling and Simulation
Mathematical Physics
General Physics and Astronomy

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10.1088/1751-8113/40/41/002

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AB - The motion of a particle in a ring of length L is influenced by a dirty metal environment whose fluctuations are characterized by a short correlation distance ℓ ≪ L. We analyze the induced decoherence process, and compare the results with those obtained in the opposing Caldeira-Leggett limit (ℓ ≫ L). A proper definition of the dephasing factor that does not depend on a vague semiclassical picture is employed. Some recent Monte Carlo results about the effect of finite temperatures on 'mass renormalization' in this system are illuminated.

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Dephasing of a particle in a dissipative environment

Abstract

ASJC Scopus subject areas

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