We explore how quantum gravity effects, manifested through the breaking of discrete
symmetry responsible for both dark matter and domain walls, can have observational effects …

We address the notorious metastability of the Standard Model (SM) and promote it to a
model building task: What are the new ingredients required to stabilize the SM up to the …

A bstract We investigate an extension of the Standard Model (SM) with two candidates for
dark matter (DM). One of them is a real scalar field and the other is an Abelian gauge field …

If coupled feebly to the Standard Model bath, dark matter can evade the severe constraints
from the direct search experiments. At the same time, such interactions help produce dark …

We examine the impact of a faster expanding Universe on the phenomenology of scalar
dark matter (DM) associated with SU (2) L multiplets. Earlier works with a radiation …

A bstract We investigate, for the first time, a scenario where the dark matter consists of three
complex scalar fields that are stabilized by a single Z 7 symmetry. As an extension of the …

We study an extension of the Standard Model (SM) which could have two candidates for
dark matter (DM) including a Dirac fermion and a vector dark matter (VDM) under a new U …

In one-component dark matter (DM) scenarios is commonly assumed that a scalar weakly
interacting massive particle must either be part of an SU (2) L multiplet with zero …

A bstract We explore three-Higgs-doublet models that may accommodate scalar Dark Matter
where the stability is based on an unbroken U (1)-based symmetry, rather than the familiar ℤ …

A two-component scalar dark matter scenario comprising an additional scalar doublet and a
Y= 0 scalar triplet is proposed. Key features of the ensuing dark matter phenomenology are …