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Quantum evolution according to real clocks

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Egusquiza, Iñigo L. and Garay Elizondo, Luis Javier and Raya, José M. (1999) Quantum evolution according to real clocks. Physical review A, 59 (5). pp. 3236-3240. ISSN 1050-2947

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Official URL: http://dx.doi.org/10.1103/PhysRevA.59.3236




Abstract

We characterize good clocks, which are naturally subject to fluctuations, in statistical terms. We also obtain the master equation that governs the evolution of quantum systems according to these clacks and find its general solution. This master equation is diffusive and produces loss of coherence, Moreover, real clocks can he described in terms of effective interactions that are nonlocal in time. Alternatively, they can be modeled by an effective thermal bath coupled to the system. [S1050-2947(99)04905-7].


Item Type:Article
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© 1999 The American Physical Society.
We thank C. Barceló, C. Cabrillo, P.F. González-Díaz, G.A. Mena Marugán, and M.A. alle Basagoiti for discussions. J.M.R. is also grateful to J.M. Quintana. We had support from the University of the Basque Country (Project No. UPV 063.310-EB225/95) from Junta de Andalucía, and from DGICYT (Spain) under Project Nos. PB94-0107 and PB93- 0139.

Uncontrolled Keywords:Time; Gravity; Mechanics; Arrival; Spacetime; Dynamics
Subjects:Sciences > Physics > Physics-Mathematical models
Sciences > Physics > Mathematical physics
ID Code:29934
Deposited On:07 May 2015 10:40
Last Modified:10 Dec 2018 15:10

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