Crossover from coherent to incoherent dynamics in damped quantum systems

Abstract

The destruction of quantum coherence by environmental influences is investigated taking the damped harmonic oscillator and the dissipative two-state system as prototypical examples. It is shown that the location of the coherent-incoherent transition depends to a large degree on the dynamical quantity under consideration.

4 Pages RevTex, to appear as Rapid Communication Phys. Rev. E

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