Quantum work statistics of linear and nonlinear parametric oscillators

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https://www.sciencedirect.com/science/article/abs/pii/S030101041000282X

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https://doi.org/10.1016/j.chemphys.2010.04.042
 http://hdl.handle.net/11603/19399

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UMBC Physics Department
UMBC Joint Center for Earth Systems Technology (JCET)

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2010-06-18

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journal articles preprints
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Sebastian Deffner, Obinna Abah and Eric Lutz, Quantum work statistics of linear and nonlinear parametric oscillators, Chemical Physics Volume 375, Issues 2–3, Pages 200-208 (2010), https://doi.org/10.1016/j.chemphys.2010.04.042

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Abstract

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.