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 …

The properties of the recently discovered Higgs boson together with the absence of new
physics at collider experiments allows us to speculate about consistently extending the …

We perform a Markov Chain Monte Carlo analysis of a simple yet generic multifield inflation
model characterized by two scalar fields coupled to each other and nonminimally coupled to …

Vector bosons heavier than 10-22 eV can be viable dark matter candidates with distinctive
experimental signatures. Ultralight dark matter generally requires a nonthermal origin to …

We consider the simplest possibility for a model of particle dark matter in which dark matter
has only gravitational interaction with the standard model sector. Even in such a case, it is …

We study the impact of stochastic noise on the generation of primordial black hole (PBH)
seeds in ultra-slow-roll (USR) inflation with numerical simulations. We consider the non …

We consider the effects of nonminimal couplings to curvature of the form ξ SS 2 R for three
types of scalars: the Higgs boson, the inflaton, and a scalar dark matter candidate. We …

Primordial black holes (PBHs) provide an exciting prospect for accounting for dark matter. In
this paper, we consider inflationary models that incorporate realistic features from high …

We present a comprehensive discussion on lattice techniques for the simulation of scalar
and gauge field dynamics in an expanding universe. After reviewing the continuum …

General relativity (GR) exists in different formulations. They are equivalent in pure gravity but
generically lead to distinct predictions once matter is included. After a brief overview of …