Quantum relaxation and Poincaré recurrences

Giulio Casati

Physica A: Statistical Mechanics and its Applications, 2000, vol. 288, issue 1, 49-60

Abstract: We study the quantum relaxation process in open dynamical systems with completely chaotic or mixed classical phase space. We show that quantum effects modify the decay rate of Poincaré recurrences P(t). In particular, the exponent p of the algebraic decay P(t)∝1/tp is shown to have the universal value p=1 due to tunneling and localization effects. Experimental evidence of such decay should be observable in mesoscopic systems and cold atoms.

Keywords: Quantum chaos (search for similar items in EconPapers)
Date: 2000
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:288:y:2000:i:1:p:49-60

DOI: 10.1016/S0378-4371(00)00414-3

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