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arXiv · 0708.0965

Dephasing of a particle in a dissipative environment

Doron Cohen·Baruch Horovitz
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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 $\ell << L$. We analyze the induced decoherence process, and compare the results with those obtained in the opposing Caldeira-Leggett limit ($\ell >> L$). 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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Doron Cohen, Baruch Horovitz. 2007-09-19. Dephasing of a particle in a dissipative environment. https://doi.org/10.1088/1751-8113/40/41/002

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