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Positivity bounds from multiple vacua and their cosmological consequences
Positivity bounds - constraints on any low-energy effective field theory
imposed by the fundamental axioms of unitarity, causality and locality in the
UV - have recently been used to constrain various effective field...
Cosmological constraints on decaying axion-like particles
Abstract
Axion-like particles (ALPs) decaying into photons are known to affect a wide range of
astrophysical and cosmological observables. In this study we focus on ALPs with...
C Balázs, S Bloor, TE Gonzalo, W Handley, S Hoof, F Kahlhoefer, M Lecroq, DE Marsh, J Renk, P Scott, P Stöcker
Dec 19, 2022