Detection prospects of gravitational waves from SU(2) axion inflation
We study detection prospects of a gravitational-wave background (GWB) sourced by SU(2) gauge fields considering all possible observational constraints. More precisely, we consider bounds set by cosmic microwave background measurements, primordial black hole overproduction, as well as backreaction of the gauge fields on the background evolution. Gravitational-waves data from the first three observing runs of the LIGO-Virgo-KAGRA Collaboration show no evidence for a GWB contribution from axion inflation. However, we are able to place conservative constraints on the parameters of the SU(2) inflation with current data. We investigate conditions on the inflationary potential that would lead to a detectable signal that evades astrophysical and cosmological constraints and discuss detection prospects for third generation networks. Published by the American Physical Society 2024
Authors
- Mairi Sakellariadou (ORCID: https://orcid.org/0000-0002-2715-1517)
- Sachiko Kuroyanagi (ORCID: https://orcid.org/0000-0001-6538-1447)
- C. Badger (ORCID: https://orcid.org/0000-0002-5238-5622)
- A. Romero
- Tomohiro Fujita
- H. Duval (ORCID: https://orcid.org/0000-0002-2475-1728)
Institutions
- Vrije Universiteit Brussel (BE)
- Consejo Superior de Investigaciones Científicas (ES)
- Waseda University (JP)
- King's College London (GB)
- Nagoya University (JP)
- The University of Tokyo (JP)
Publication Details
- Journal
- Physical review. D/Physical review. D.
- Published
- 2024-10-24
- DOI
- https://doi.org/10.1103/physrevd.110.084063
- Citations
- 9
- Primary Topic
- Cosmology and Gravitation Theories
- Type
- article
- Field-Weighted Citation Impact
- 2.98
Funders
- National Science Foundation
- Comunidad de Madrid
- Ministry of Education, Culture, Sports, Science and Technology
- Academia Sinica
- Fonds Wetenschappelijk Onderzoek
- National Research Foundation of Korea
- Vrije Universiteit Brussel
- Centre National de la Recherche Scientifique
- Ministerio de Ciencia e Innovación
- MPS España
- Vlaamse Interuniversitaire Raad
- Ministry of Science and ICT, South Korea
- Science and Technology Facilities Council
- Australian Research Council
- Japan Society for the Promotion of Science
- Instituto Nazionale di Fisica Nucleare
- Agencia Estatal de Investigación