73 citations · 1.1k across the 52 of their papers we have counts for
53 papers
Primordial black holes formation in inflationary models with scalar fields
E. O. Pozdeeva, S. Yu. Vernov
We construct gravity models with scalar fields to describe cosmological inflation and formation of primordial black holes (PBHs). By adding the induced gravity term and the…
Inflation in gravity models revisited after ACT
Sergei V. Ketov, Ekaterina O. Pozdeeva, Sergey Yu. Vernov
The gravity models of inflation are revisited in light of the recent observations of cosmic microwave background radiation by Atacama Cosmology Telescope (ACT) and DESI Coll…
More accurate slow-roll approximations for inflation in scalar-tensor theories
Ekaterina O. Pozdeeva, Maria A. Skugoreva, Alexey V. Toporensky +1
We propose new versions of the slow-roll approximation for inflationary models with nonminimally coupled scalar fields. We derive more precise expressions for the standard slow-rol…
Slow-roll approximations in Einstein--Gauss--Bonnet gravity formulated in terms of e-folding numbers
E. O. Pozdeeva
In the Einstein--Gauss--Bonnet (EGB) gravity models, the slow-roll approximation has been extended by taking into account the first-order slow-roll parameter $δ_1 =-2\,H^2\,ξ^\prim…
Primordial Black Holes in Induced Gravity Inflationary Models with Two Scalar Fields
E. O. Pozdeeva, S. Yu. Vernov
We propose a two-field inflationary model with the induced gravity term. Using conformal transformation of the metric, we get the chiral cosmological model with two scalar fields.…
Superpotential method and the amplification of inflationary perturbations
Alexander Y. Kamenshchik, Ekaterina O. Pozdeeva, Augustin Tribolet +3
The superpotential method is a reconstruction technique which has proven useful to build exact cosmological solutions. We here employ the superpotential method in order to reconstr…