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arXiv · 1101.5235

Open quantum system approach to Gibbons-Hawking effect of de Sitter space-time

Hongwei Yu
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Abstract

We analyze, in the paradigm of open quantum systems, the reduced dynamics of a freely-falling two-level detector in de Sitter space-time in weak interaction with a reservoir of fluctuating quantized conformal scalar fields in the de Sitter invariant vacuum. We find that the detector is asymptotically driven to a thermal state at the Gibbons-Hawking temperature, regardless of its initial state. Our discussion therefore shows that the Gibbons-Hawking effect of de Sitter space-time can be understood as a manifestation of thermalization phenomena that involves decoherence and dissipation in open quantum systems.

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Hongwei Yu. 2011-02-14. Open quantum system approach to Gibbons-Hawking effect of de Sitter space-time. https://doi.org/10.1103/physrevlett.106.061101

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