Geodesic
Semiclassical analysis of pair creation in de Sitter space
Teoretičeskaâ i matematičeskaâ fizika, Tome 180 (2014) no. 1, pp. 72-85 Cet article a éte moissonné depuis la source Math-Net.Ru

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We study a massive scalar field theory in de Sitter space. Using a worldline instanton approach, we calculate the pair creation probability in the weak-field limit. In addition to the exponential factor, we derive the pre-exponential factor. In this method, the pair creation probability for an odd-dimensional space vanishes. We find the leading contribution to the two-point correlator in the $\phi^3$ theory.
Keywords: quantum field in curved space, de Sitter space. 
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S. Guts. Semiclassical analysis of pair creation in de Sitter space. Teoretičeskaâ i matematičeskaâ fizika, Tome 180 (2014) no. 1, pp. 72-85. http://geodesic.mathdoc.fr/item/TMF_2014_180_1_a5/

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