| Article | |
| Report number | arXiv:1706.07415 ; CERN-TH-2017-135 |
| Title | Wormholes and masses for Goldstone bosons |
| Related title | Wormholes and masses for Goldstone bosons |
| Author(s) | Alonso, Rodrigo (CERN) ; Urbano, Alfredo (CERN) |
| Publication | 2019-02-20 |
| Imprint | 2017-06-22 |
| Number of pages | 50 |
| Note | 50 pages, 15 figures. v2: minor changes, refs added |
| In: | JHEP 02 (2019) 136 |
| DOI | 10.1007/JHEP02(2019)136 |
| Subject category | hep-th ; Particle Physics - Theory ; astro-ph.CO ; Astrophysics and Astronomy ; hep-ph ; Particle Physics - Phenomenology |
| Abstract | There exist non-trivial stationary points of the Euclidean action for an axion particle minimally coupled to Einstein gravity, dubbed wormholes. They explicitly break the continuos global shift symmetry of the axion in a non-perturbative way, and generate an effective potential that may compete with QCD depending on the value of the axion decay constant. In this paper, we explore both theoretical and phenomenological aspects of this issue. On the theory side, we address the problem of stability of the wormhole solutions, and we show that the spectrum of the quadratic action features only positive eigenvalues. On the phenomenological side, we discuss, beside the obvious application to the QCD axion, relevant consequences for models with ultralight dark matter, black hole superradiance, and the relaxation of the electroweak scale. We conclude discussing wormhole solutions for a generic coset and the potential they generate. |
| Copyright/License | arXiv nonexclusive-distrib. 1.0 publication: (License: CC-BY-4.0) |
Corresponding record in: Inspire
Record created 2017-07-12, last modified 2023-10-04