We present an overview of scenarios where the observed Dark Matter (DM) abundance
consists of Feebly Interacting Massive Particles (FIMPs), produced nonthermally by the so …

It is commonly assumed that the energy density of the Universe was dominated by radiation
between reheating after inflation and the onset of matter domination 54,000 years later …

A bstract We present an updated analysis of the first-order phase transition associated with
symmetry breaking in the early Universe in a classically scale-invariant model extended with …

The hot big bang is often considered as the origin of all matter and radiation in the Universe.
Primordial nucleosynthesis provides strong evidence that the early Universe contained a hot …

We present global analyses of effective Higgs portal dark matter models in the frequentist
and Bayesian statistical frameworks. Complementing earlier studies of the scalar Higgs …

Abstract Weakly-and Feebly-Interacting Massive Particles (WIMPs and FIMPs) are among
the best-motivated dark matter (DM) candidates. In this paper, we investigate the production …

In dimension-less theories of dynamical generation of the weak scale, the Universe can
undergo a period of low-scale inflation during which all particles are massless and undergo …

We study the impact of thermalization and number-changing processes in the dark sector on
the yield of gravitationally produced dark matter (DM). We take into account the DM …

Hawking evaporation of primordial black holes (PBH) with masses ranging from∼ 10-1 to∼
10 9 g can generate the whole observed dark matter (DM) relic density. However, a second …

We investigate Hawking evaporation of a population of primordial black holes (PBHs) prior
to big bang nucleosynthesis as a mechanism to achieve asymmetric reheating of two sectors …