Entanglement of thermal scalar fields in a compact space space

Details Entanglement of thermal scalar fields in a compact space space Entanglement of thermal scalar fields in a compact space space

2007-02-28

arxiv.org/abs/quant-ph/0702264v3

Physics

Quantum Physics

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Scientific paper

Using the thermal Green's function approach we propose a general method to investigate entanglement of the vacuum state or thermal ground states in an arbitrary dimensional space-time. As an application we show quantum separability of the massive thermal scalar field vacuum in the 1+1 dimensional cylindrical space-time. Separability is demonstrated using the positive partial transpose criterion for effective two-mode Gaussian states of collective operators. In this case, for all mass and temperature values entanglement is absent between the collective operators.

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