Quintessential inflation provides a unified description of inflation and dark energy in terms of
a single scalar degree of freedom, the cosmon. We present here a comprehensive overview …

Gravitational particle production is a minimal contribution to reheating the Universe after the
end of inflation. To study this production channel, two different approaches have commonly …

We investigate the out-of-equilibrium production of scalar dark matter (DM) from the inflaton
condensate during inflation and reheating. We assume that this scalar couples only to the …

We make use of classical lattice simulations in 3+ 1 dimensions to study the preheating
stage of Higgs Inflation in Einstein-Cartan gravity. Focusing for concreteness on a simplified …

We consider the production of dark matter during the process of reheating after inflation. The
relic density of dark matter from freeze-in depends on both the energy density and energy …

In the canonical tachyonic resonance preheating scenario, only an order one fraction of
energy density in the inflaton is transferred to radiation, due to backreaction effects. One …

We show, within the single-field inflationary paradigm, that a linear non-minimal interaction ξ
MP ϕ R between the inflaton field ϕ and the Ricci scalar R can result in successful inflation …

A Hubble-induced phase transition is a natural spontaneous symmetry breaking mechanism
allowing for explosive particle production in non-oscillatory models of inflation involving non …

We revisit the renormalizable polynomial inflection point model of inflation, focusing on the
small field scenario which can be treated fully analytically. In particular, the running of the …

Abstract Using 3+ 1 classical lattice simulations, we follow the symmetry breaking pattern
and subsequent non-linear evolution of a spectator field non-minimally coupled to gravity …