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arXiv · 0712.2859

Weak Gravity Conjecture for the Effective Field Theories with N Species

Qing-Guo Huang
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Abstract

We conjecture an intrinsic UV cutoff for the validity of the effective field theory with a large number of species coupled to gravity. In four dimensions such a UV cutoff takes the form $Λ=\sqrt{λ/ N}M_p$ for $N$ scalar fields with the same potential $λϕ_i^4$, $i=1,...,N$. This conjecture implies that the assisted chaotic inflation or N-flation might be in the swampland, not in the landscape. Similarly a UV cutoff $Λ=gM_p/\sqrt{N}$ is conjectured for the U(1) gauge theory with $N$ species.

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Qing-Guo Huang. 2007-12-23. Weak Gravity Conjecture for the Effective Field Theories with N Species. https://doi.org/10.1103/physrevd.77.105029

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