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arXiv · 0909.3722

Real or Imaginary? (On pair creation in de Sitter space)

Emil T. Akhmedov
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Abstract

Using properly defined Feynman propagator we obtain non--zero imaginary contribution to the scalar field effective action in even dimensional de Sitter space. Such a propagator follows from the path integral in de Sitter space and obeys composition principle proposed in arXiv:0709.2899. The obtained expression for the effective action shows particle production with the Gibbons--Hawking rate.

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Emil T. Akhmedov. 2010-07-06. Real or Imaginary? (On pair creation in de Sitter space). https://doi.org/10.1142/s0217732310034043

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