Phys. Rev. A 72, 034103 (2005) [4 pages]Decoherence induced by a composite environmentReceived 11 July 2005; revised 10 August 2005; published 30 September 2005 We study the decoherence induced by the environment over a composite quantum system, comprising two coupled subsystems A and B, which may be a harmonic or an upside-down oscillator. We analyze the case in which the B subsystem is in direct interaction with a thermal bath, while the other remains isolated from the huge reservoir. We compare the results concerning the decoherence suffered by the A subsystem. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.72.034103
DOI:
10.1103/PhysRevA.72.034103
PACS:
03.65.Yz, 05.40.−a
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