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Infrared effects in inflationary correlation functions

journal contribution
posted on 2023-06-08, 09:58 authored by David SeeryDavid Seery
In this paper, I briefly review the status of infrared effects which occur when using inflationary models to calculate initial conditions for a subsequent hot, dense plasma phase. Three types of divergences have been identified in the literature: secular, 'time-dependent' logarithms, which grow with time spent outside the horizon; 'box-cutoff' logarithms, which encode a dependence on the infrared cutoff when calculating in a finite-size box; and 'quantum' logarithms, which depend on the ratio of a scale characterizing new physics to the scale of whatever process is under consideration, and whose interpretation is the same as the conventional field theory. I review the calculations in which these divergences appear, and discuss the methods which have been developed to deal with them.

History

Publication status

  • Published

Journal

Classical and Quantum Gravity

ISSN

0264-9381

Issue

12

Volume

27

Page range

124005

Pages

30.0

Department affiliated with

  • Physics and Astronomy Publications

Full text available

  • No

Peer reviewed?

  • Yes

Legacy Posted Date

2012-02-06

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