Orateur
Giacomo Ferrante
(LUPM)
Description
In models with spontaneous symmetry breaking by scalar fields in large group representations, we observe that some of the scalar masses can be loop-suppressed with respect to the naive expectation from symmetry selection rules. We present minimal models -- the SU(2) five-plet and SU(3) ten-plet -- with such accidentally light scalars, featuring compact tree-level flat directions lifted by radiative corrections. We sketch some potential applications, from stable relics and slow roll in cosmology, to hierarchy and fine-tuning problems in particle physics.
Auteurs principaux
Felix Bruemmer
(LUPM Montpellier)
Giacomo Ferrante
(LUPM)
Michele FRIGERIO
({CNRS}UMR5221)
Thomas Hambye Hambye
(Service de Physique Theorique, Universite Libre de Bruxelles)
