4.6 Article

Cosmological constant problem: deflation during inflation

出版社

IOP Publishing Ltd
DOI: 10.1088/1475-7516/2020/01/021

关键词

gravity; inflation; modified gravity

资金

  1. Fondecyt [1181694, 1161150]
  2. DI-VRIEA through Proyecto Postdoctorado 2019 VRIEA-PUCV

向作者/读者索取更多资源

We argue that the discrepancy between the Planck mass scale and the observed value of the cosmological constant can be largely attenuated, if those quantities are understood as a result of effective, and thus scale-dependent, couplings. We exemplify this mechanism for the early inflationary epoch of the universe by solving the corresponding effective gap equations, subject to an energy condition. Several non-trivial checks and extensions are discussed. A comparison of our results to the renormalization group flow, obtained within the asymptotic safety program reveals a stunning agreement.

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