Decoherence in a classically chaotic quantum system: entropy production and quantum-classical correspondence.
Phys Rev E Stat Nonlin Soft Matter Phys
; 64(5 Pt 2): 056238, 2001 Nov.
Article
in En
| MEDLINE
| ID: mdl-11736085
We study the decoherence process for an open quantum system that is classically chaotic (a quartic double well with harmonic driving coupled to a sea of harmonic oscillators). We carefully analyze the time dependence of the rate of entropy production showing that it has two relevant regimes: For short times it is proportional to the diffusion coefficient (fixed by the system-environment coupling strength); for longer times (but before equilibration) it is fixed by dynamical properties of the system (and is related to the Lyapunov exponent). The nature of the transition time between both regimes is investigated and the issue of quantum to classical correspondence is addressed. Finally, the impact of the interaction with the environment on coherent tunneling is analyzed.
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Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Phys Rev E Stat Nonlin Soft Matter Phys
Journal subject:
BIOFISICA
/
FISIOLOGIA
Year:
2001
Document type:
Article
Affiliation country:
Argentina
Country of publication:
United States