Quantum work statistics of linear and nonlinear parametric oscillators

被引：60
|
作者：
Deffner, Sebastian [1 ]
Abah, Obinna [1 ]
Lutz, Eric [1 ]
机构：
[1] Univ Augsburg, Dept Phys, D-86135 Augsburg, Germany
来源：
CHEMICAL PHYSICS | 2010年 / 375卷 / 2-3期
关键词：
Nanothermodynamics; Nonequilibrium statistics; Ion traps; FREE-ENERGY DIFFERENCES; NONEQUILIBRIUM MEASUREMENTS; EQUALITY; EQUATIONS;
D O I：
10.1016/j.chemphys.2010.04.042
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We consider the nonequilibrium work distribution of a quantum oscillator with modulated angular frequency. We examine the discrete-to-continuous transition of the distribution as the temperature and the degree of nonadiabaticity of the frequency transformation are increased. We further develop a perturbative approach to analyze the effect of weak quartic anharmonicities, as well as of a random electric field on a charged oscillator. We find in both cases that the degree of nonadiabaticity is enhanced by the perturbation. (C) 2010 Elsevier B. V. All rights reserved.
引用
收藏
页码：200 / 208
页数：9
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