Vacuum polarization by topological defects in de Sitter spacetime

Details Vacuum polarization by topological defects in de Sitter spacetime Vacuum polarization by topological defects in de Sitter spacetime

2010-02-23

arxiv.org/abs/1002.4369v1

J. Phys. Conf. Ser. 222:012034, 2010

Physics

High Energy Physics

High Energy Physics - Theory

Talk presented at the 1st. Mediterranean Conference on Classical and Quantum Gravity (MCCQG)

Scientific paper

In this paper we investigate the vacuum polarization effects associated with a massive quantum scalar field in de Sitter spacetime in the presence of gravitational topological defects. Specifically we calculate the vacuum expectation value of the field square, $<\Phi^2>$. Because this investigation has been developed in a pure de Sitter space, here we are mainly interested on the effects induced by the presence of the defects.

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