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arXiv 0810.1113cond-mat.mes-hallcond-mat.stat-mech
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量子点Aharonov-Bohm干涉仪中的涨落定理

Fluctuation Theorem in a Quantum-Dot Aharonov-Bohm Interferometer

Yasuhiro Utsumi, Keiji Saito

摘要:

本文研究了嵌入相互作用量子点的两端Aharonov-Bohm干涉仪中的全计数统计。我们引入了一个新的鞍点解的累积生成函数,它满足涨落定理和帐户的相互作用的平均场水平近似。非线性输运系数满足微观可逆性的普遍关系,虽然散射矩阵本身是不可逆的。由于相互作用,即使在平衡状态下,偏度也可以是有限的,并且与非线性电导的不对称分量成比例。

英文摘要:

In the present study, we investigate the full counting statistics in a two-terminal Aharonov-Bohm interferometer embedded with an interacting quantum dot. We introduce a novel saddle-point solution for a cumulant-generating function, which satisfies the fluctuation theorem and accounts for the interaction in the mean-field level approximation. Nonlinear transport coefficients satisfy universal relations imposed by microscopic reversibility, though the scattering matrix itself is not reversible. The skewness can be finite even in equilibrium, owing to the interaction and is proportional to the asymmetric component of nonlinear conductance.

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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