Decoherence induced by a composite environment

FERNANDO C. LOMBARDO & PAULA I. VILLAR

PHYSICAL REVIEW A - ATOMIC, MOLECULAR AND OPTICAL PHYSICS

American Physical Society, APS, Ridge

Lugar: New York, EEUU; Año: 2005 vol. 72 p. 34103 - 34107

1050-2947

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.