On the cosmological implications of the string Swampland

We study constraints imposed by two proposed string Swampland criteria on cosmology. These criteria involve an upper bound on the range traversed by scalar fields as well as a lower bound on |∇ϕV|/V when V>0. We find that inflationary models are generically in tension with these two criteria. App...

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Bibliographic Details
Main Authors: Prateek Agrawal, Georges Obied, Paul J. Steinhardt, Cumrun Vafa
Format: Article
Language:English
Published: Elsevier 2018-09-01
Series:Physics Letters B
Online Access:http://www.sciencedirect.com/science/article/pii/S0370269318305781