3 papers
hep-ph2025
Interplay between Electroweak Symmetry Breaking and Higgs Portal Dark Matter
Sreemanti Chakraborti, André Milagre, Rui Santos +1
Models of Dark Matter must contend with the fact that the presence of electroweak symmetry breaking along the thermal evolution of the Universe modifies the masses, interactions an…
hep-ph2025
Vacuum Stability Conditions for New Multiplets
André Milagre, Darius Jurčiukonis, Luís Lavoura
We consider the addition to the Standard Model of a scalar multiplet with dimension going from to . The multiplet is assumed to have null vacuum expe…
hep-ph2024
Theorem on vacuum stability
André Milagre, Luís Lavoura
We consider an extension of the Standard Model with one or more scalar multiplets beyond the Higgs doublet . The additional scalar multiplets are supposed to carry arbitrary hyp…