@misc{10481/93653,
year = {2024},
month = {5},
url = {https://hdl.handle.net/10481/93653},
abstract = {As experiment charts new territory at the electroweak scale, the enterprise to
characterise all possible theories becomes all the more necessary. In the absence of new
particles, this ambitious enterprise is attainable and has led to the Higgs Effective Field
Theory (HEFT) as the most general characterising framework, containing the Standard Model
Effective Field Theory (SMEFT) as a subspace. The characterisation of this theory space led
to the dichotomy SMEFT vs. HEFT\SMEFT as the two possible realisations of symmetry
breaking. The criterion to distinguish these two possibilities is non-local in field space, and
phenomena which explore field space beyond the neighbourhood of the vacuum manifold are
in a singular position to tell them apart. Cosmology allows for such phenomena, and this
work focuses on HEFT\SMEFT, the less explored of the two options, to find that first order
phase transitions with detectable gravitational wave remnants, domain wall formation and
vacuum decay in the far, far distant future can take place and single out HEFT\SMEFT.
Results in cosmology are put against LHC constraints, and the potential of future groundand
space-based experiments to cover parameter space is discussed.},
organization = {STFC under Grant No.
ST/T001011/1},
organization = {Grant RYC2021-030842-I funded by
MCIN/AEI/10.13039/501100011033 and by the European Union NextGenerationEU/PRTR},
organization = {Grant PID2022-139466NB-C22 funded by MCIN/AEI/10.13039/501100011033 and by
ERDF A way of making Europe},
publisher = {Springer Nature},
keywords = {Early Universe Particle Physics},
keywords = {Phase Transitions in the Early Universe},
keywords = {SMEFT},
title = {Walls, bubbles and doom — the cosmology of HEFT},
doi = {10.1007/JHEP05(2024)049},
author = {Alonso, R. and Criado, Juan Carlos and Houtz, R. and West, M.},
}