Weak gravity conjecture constraints on inflation

Details Weak gravity conjecture constraints on inflation Weak gravity conjecture constraints on inflation

2007-03-08

arxiv.org/abs/hep-th/0703071v3

JHEP 0705:096,2007

Physics

High Energy Physics

High Energy Physics - Theory

11 pages, 3 figs; monor corrections; some clarifying remarks added and the final version for publication in JHEP

Scientific paper

10.1088/1126-6708/2007/05/096

We consider the gravitational correction to the coupling of the scalar fields. Weak gravity conjecture says that the gravitational correction to the running of scalar coupling should be less than the contribution from scalar fields. For instance, a new scale $\Lambda=\lambda_4^{1/2}M_p$ sets a UV cutoff on the validity of the effective $\lambda_4 \phi^4$ theory. Furthermore, this conjecture implies a possible constraint on the inflation model, e.g. the chaotic inflation model might be in the swampland.

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