In this paper, we review in detail different mechanisms of generation of large primordial
fluctuations and their implications for the production of primordial black holes (PBHs) and …

In inflationary models that produce a spike of power on short scales, back-reaction of small-
scale substructure onto large-scale modes is enhanced. Loop corrections that quantify this …

Recently multi-field inflation models that can produce large scalar fluctuations on small
scales have drawn a lot of attention, primarily because they could lead to primordial black …

We study the formation of primordial black holes and the generation of gravitational waves in
a class of cosmological models that are direct supersymmetric analogs of the …

We present a study of the Effective Field Theory (EFT) generalization of stochastic inflation in
a model-independent single-field framework and its impact on primordial black hole (PBH) …

Primordial black holes are produced in a minimal UV extension to the Higgs inflation with an
included R 2 term. We show that for parameters consistent with Standard Model …

We present a complete and consistent exposition of the regularization, renormalization, and
resummation procedures in the setup of having a contraction and then non-singular bounce …

We study multifield inflation in scenarios where the fields are coupled non-minimally to
gravity via ξ I (ϕ I) ng μν R μν, where ξ I are coupling constants, ϕ I the fields driving inflation …

We present a complete framework for numerical calculation of the power spectrum and
bispectrum in canonical inflation with an arbitrary number of light or heavy fields. Our …

We describe how to apply the transport method to compute inflationary observables in a
broad range of multiple-field models. The method is efficient and encompasses scenarios …