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Browsing UMBC Academic Centers and Institutes by Author "Abah, Obinna"
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Item Quantum work statistics of linear and nonlinear parametric oscillators(Elsevier, 2010-06-18) Deffner, Sebastian; Abah, Obinna; Lutz, EricWe 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.