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Temperature crossover of decoherence rates in chaotic and regular bath dynamics

AuthorsSanz, Ángel S. ; Elran, Y.; Brumer, P.
Issue Date2012
PublisherAmerican Physical Society
CitationPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics 85: 036218 (2012)
AbstractThe effect of chaotic bath dynamics on the decoherence of a quantum system is examined for the vibrational degrees of freedom of a diatomic molecule in a realistic, constant temperature collisional bath. As an example, the specific case of I 2 in liquid xenon is examined as a function of temperature, and the results compared with an integrable xenon bath. A crossover in behavior is found: The integrable bath induces more decoherence at low bath temperatures than does the chaotic bath, whereas the opposite is the case at the higher bath temperatures. These results, verifying a conjecture due to Wilkie, shed light on the differing views of the effect of chaotic dynamics on system decoherence. © 2012 American Physical Society.
Identifiersdoi: 10.1103/PhysRevE.85.036218
issn: 1539-3755
Appears in Collections:(CFMAC-IFF) Artículos
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