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 …

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 …

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 …

Heavy scalar fields can undergo an instability during inflation as a result of their kinetic
couplings with the inflaton. This is known as the geometrical destabilization of inflation, as it …

The modified supergravity approach is applied to describe a formation of Primordial Black
Holes (PBHs) after Starobinsky inflation. Our approach naturally leads to the two-(scalar) …

The time evolution of primordial fluctuations conceals a wealth of insights into the high-
energy physics at play during the earliest moments of our Universe, which is ultimately …

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 propose a novel model of the modified (Starobinsky-like) old-minimal-type supergravity
coupled to a chiral matter superfield, that can simultaneously describe multi-field inflation …

Nongaussian statistics are a powerful discriminant between inflationary models, particularly
those with noncanonical kinetic terms. Focusing on theories where the Lagrangian is an …

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 …