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arXiv 0708.0965cond-mat.mes-hall
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耗散环境中粒子的退相

Dephasing of a particle in a dissipative environment

Doron Cohen, Baruch Horovitz

摘要:

在长度为L的环中,粒子的运动受到脏金属环境的影响,脏金属环境的波动特征在于短的相关距离$\ell << L$。我们分析了诱导退相干过程,并与在相反的Caldeira-Leggett极限($\ell >> L$)中得到的结果进行了比较。一个适当的定义的失相因子,不依赖于一个模糊的半经典图片。本文介绍了最近关于有限温度对该系统质量重整化的影响的一些蒙特卡罗结果。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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