All Title Author
Keywords Abstract

Physics  2002 

Semiclassical Theory of Coherence and Decoherence

DOI: 10.1103/PhysRevA.68.022112

Full-Text   Cite this paper   Add to My Lib


A general semiclassical approach to quantum systems with system-bath interactions is developed. We study system decoherence in detail using a coherent state semiclassical wavepacket method which avoids singularity issues arising in the usual Green's function approach. We discuss the general conditions under which it is approximately correct to discuss quantum decoherence in terms of a ``dephasing'' picture and we derive semiclassical expressions for the phase and phase distribution. Remarkably, an effective system wavefunction emerges whose norm measures the decoherence and is equivalent to a density matrix formulation.


comments powered by Disqus

Contact Us


微信:OALib Journal