How the Unruh effect affects transition between classical and quantum decoherences

Details How the Unruh effect affects transition between classical and quantum decoherences How the Unruh effect affects transition between classical and quantum decoherences

2012-03-28

arxiv.org/abs/1203.6141v1

Physics letters B, 707 (2012) 264

Physics

Quantum Physics

15 pages, 6 figures

Scientific paper

We investigate how the Unruh effect affects the transition between classical and quantum decoherences for a general class of initial states and find that: $(i)$ The quantum decoherence exists while $\lambda t\leq\lambda \widetilde{t}$ (the transition time) and the classical one can also affect the system's evolution while $\lambda t\geq\lambda\widetilde{t}$ for both the bit and phase-bit flips, which are different from the cases in inertial frame; $(ii)$ The classical correlations will be different constants corresponding to different Unruh temperature and the quantum decoherence still dominates the evolution of system as $\lambda t\geq\lambda\widetilde{t}$ for the phase flip; And $(iii)$ as the Unruh temperature increases, the $\lambda\widetilde{t}$, compared with that in inertial frame, will be bigger for phase flip but smaller for bit flip. However, the $\lambda\widetilde{t}$ does not change no matter what the Unruh effect is for phase-bit flip.

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