2018/11/12 by Masahiro Ibe, Masahito Yamazaki, Tsutomu T. Yanagida · 1 voice · 2 citations
Physics and Astronomy · #astro-ph.CO #hep-ph #hep-th
paper · pdf · doi:10.1088/1361-6382/ab5197
published as Class. Quantum Grav. 36, 235020 (2019) · 6 pages, 1 figure; v3: published version
arxiv published 2018/11/12 · arxiv created 2019/11/03 · arxiv updated 2019/12/06
We point out that the swampland conjectures, forbidding the presence of global symmetries and (meta-)stable de Sitter vacua within quantum gravity, pick up a dynamical axion for the electroweak SU(2) gauge theory as a natural candidate for the quintessence field. The potential energy of the electroweak axion provides an attractive candidate for the dark energy. We discuss constraints from the weak gravity conjecture, from the conjecture of no global symmetry, and from observations, which can be satisfied elegantly in a supersymmetric extension of the standard model.