Fundamental Forces and Scalar Field Dynamics in the Early Universe
arXiv:1908.10930 · doi:10.1016/j.physletb.2020.135369
Abstract
Scalar weak gravity conjectures (SWGCs) attempt to pinpoint the ranges of couplings consistent with a fundamental theory of all interactions. We identify a generic dynamical consequence of these conjectures for cosmology and show that SWGCs imply a particular behavior of the scalar fields in the early universe. A scalar field that develops a large expectation value during inflation must relax to the minimum of effective potential at a later time. SWGCs imply that a homogeneous distribution of the field is unstable with respect to fragmentation into localized lumps, which could potentially lead to significant consequences for cosmology.
arXiv comment6 pages, 1 figure; v2: publication version
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