MG13 - Talk detail |
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Participant |
Korai, Yusuke | |||||||
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Institution |
YITP, Kyoto University - Kitashirakawa Oiwakecho - Sakyo-ku - Kyoto - Japan | |||||||
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Session |
GT5 |
Accepted |
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Order |
Time |
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Talk |
Oral abstract |
Title |
QFT on de Sitter: Lorentzian flat chart and Euclidean sphere | |||||
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Abstract |
We study correlation functions perturbatively for interacting field theory on flat chart of Lorentzian de Sitter spacetime and on Euclidean sphere. The former are defined as the in-in correlators with free Euclidean vacuum initial condition. The latter are those defined by Euclidean path integral. It has already been shown by other authors that they coincide. We give another proof, by direct calculation, that these two correlators are identical to each other for massive scalar fields with non-derivative interactions at all orders, graph by graph. |
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