Fundamental forces and scalar field dynamics in the early universe

Alexander Kusenko, Volodymyr Takhistov, Masaki Yamada, Masahito Yamazaki

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


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.

Original languageEnglish
Article number135369
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Publication statusPublished - 2020 May 10


Dive into the research topics of 'Fundamental forces and scalar field dynamics in the early universe'. Together they form a unique fingerprint.

Cite this