Enhancement of the Axion Decay Constant in Inflation and the Weak Gravity Conjecture

6 Jun 2019Pran NathMaksim Piskunov

Models of axion inflation based on a single cosine potential require the axion decay constant $f$ to be super-Planckian in size. However, $f > M_{Pl}$ is disfavored by the Weak Gravity Conjecture (WGC)... (read more)

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