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Abstract
One of the simplest standard model extensions leading to a domain wall network is a real scalar S with a Z2 symmetry spontaneously broken during universe evolution. Motivated by the swampland program, we explore the possibility that quantum gravity effects are responsible for violation of the discrete symmetry, triggering the annihilation of the domain wall network. We explore the resulting cosmological implications in terms of dark radiation, dark matter, gravitational waves, primordial black holes, and wormholes connected to baby universes.
Text
2501.16414v1
- Author's Original
Available under License Creative Commons Attribution.
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Accepted/In Press date: 27 January 2025
Additional Information:
18 pages, 6 figures
Keywords:
hep-ph, astro-ph.CO, gr-qc, hep-th
Identifiers
Local EPrints ID: 499114
URI: http://eprints.soton.ac.uk/id/eprint/499114
PURE UUID: 6f94c0d8-c26d-4052-9207-3d1623a938c7
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Date deposited: 10 Mar 2025 17:34
Last modified: 10 Mar 2025 17:34
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Contributors
Author:
Yann Gouttenoire
Author:
Stephen F. King
Author:
Rishav Roshan
Author:
Xin Wang
Author:
Graham White
Author:
Masahito Yamazaki
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