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Constructing Infrared Finite Propagators in Inflating Space-time · Around

2010

Constructing Infrared Finite Propagators in Inflating Space-time

Kumar, Jason, Leblond, Louis, Rajaraman, Arvind

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The usual (Bunch-Davies) Feynman propagator of a massless field is not well defined in an expanding universe due to the presence of infrared divergences.

We propose a new propagator which yields infrared finite answers to any correlation function.
The key point is that in a de Sitter spacetime there is an ambiguity in the zero-mode of the propagator.
This ambiguity can be used to cancel the apparent divergences which arise in some loop calculations in eternally (or semi-eternally) inflating spacetime.

Built on

L. H. Ford and L. Parker, Phys. Rev. D 16
1977
Earlier work this paper cites.
A. Vilenkin and L. H. Ford, Phys. Rev. D 26
1982
Earlier work this paper cites.
A. Higuchi, unpublished, 1985
1985
Earlier work this paper cites.
B. Allen, Phys. Rev. D 34
1986
Earlier work this paper cites.
B. Allen and A. Folacci, Phys. Rev. D 35
1987
Earlier work this paper cites.
K. Kirsten and J. Garriga, Phys. Rev. D 48
1993
Earlier work this paper cites.
A. A. Starobinsky and J. Yokoyama, Phys. Rev. D 50
1994
Earlier work this paper cites.
H. J. de Vega, J. Ramirez and N. G. Sanchez, Phys. Rev. D 60
1999
Earlier work this paper cites.

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S. Weinberg, Phys. Rev. D 72

2008

Cited alongside, same era.

C. P. Burgess, L. Leblond, R. Holman and S. Shandera, arXiv:0912.1608 [hep-th]

Cited in the paper.

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N. C. Tsamis and R. P. Woodard, Nucl. Phys. B 724

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J. Kumar, L. Leblond and A. Rajaraman, arXiv:0909.2040 [astro-ph.CO]

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