Abstract
The two-point function of a free massive scalar field on a fixed background can be evaluated in the large mass limit by using a semiclassical geodesic approximation. In de Sitter space, however, this poses a puzzle. Certain spacelike separated points are not connected by real geodesics despite the corresponding two-point function in the Bunch-Davies state being non-vanishing. We resolve this puzzle by considering complex geodesics after analytically continuing to the sphere. We compute one-loop corrections to the correlator and discuss the implications of our results to de Sitter holography.
Original language | English |
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Article number | 6 |
Journal | Journal of High Energy Physics |
Volume | 2023 |
Issue number | 3 |
DOIs | |
State | Published - 1 Mar 2023 |
Keywords
- AdS-CFT Correspondence
- de Sitter space
ASJC Scopus subject areas
- Nuclear and High Energy Physics