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起伏势垒上的量子逃逸动力学

Quantum escape kinetics over a fluctuating barrier.

作者信息

Ghosh Pulak Kumar, Barik Debashis, Bag Bidhan Chandra, Ray Deb Shankar

机构信息

Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India.

出版信息

J Chem Phys. 2005 Dec 8;123(22):224104. doi: 10.1063/1.2135781.

DOI:10.1063/1.2135781
PMID:16375467
Abstract

The escape rate of a particle over a fluctuating barrier in a double-well potential exhibits resonance at an optimum value of correlation time of fluctuation. This has been shown to be important in several variants of kinetic model of chemical reactions. We extend the analysis of this phenomenon of resonant activation to quantum domain to show how quantization significantly enhances resonant activation at low temperature due to tunneling.

摘要

在双阱势中,粒子越过起伏势垒的逃逸率在起伏关联时间的最佳值处呈现出共振。这已被证明在化学反应动力学模型的几种变体中很重要。我们将这种共振激活现象的分析扩展到量子领域,以展示量子化如何由于隧穿效应在低温下显著增强共振激活。

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