In the recent years, primordial black holes (PBHs) have emerged as one of the most
interesting and hotly debated topics in cosmology. Among other possibilities, PBHs could …

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 current flow of high accuracy astrophysical data, among which are the Cosmic
Microwave Background (CMB) measurements by the Planck satellite, offers an …

The theory of inflation with single and multiple fields is reviewed paying particular attention
to the dynamics of adiabatic and entropy/isocurvature perturbations which provide the …

We discuss the evolution of linear perturbations about a Friedmann-Robertson-Walker
background metric, using only the local conservation of energy momentum. We show that on …

We study adiabatic (curvature) and entropy (isocurvature) perturbations produced during a
period of cosmological inflation that is driven by multiple scalar fields with an arbitrary …

Reheating is an important part of inflationary cosmology. It describes the production of
Standard Model particles after the phase of accelerated expansion. We review the reheating …

We present the first Bayesian constraints on the single field inflationary reheating era
obtained from cosmic microwave background (CMB) data. After demonstrating that this …

In the presence of self-interactions, the post-inflationary evolution of the inflaton field is
driven into the non-linear regime by the resonant growth of its fluctuations. The once …

Reheating is a transition era after the end of inflation, during which the inflaton is converted
into the particles that populate the Universe at later times. No direct cosmological …