Various pulsar timing array (PTA) experiments (NANOGrav, EPTA, PPTA, CPTA, including
data from InPTA) very recently reported evidence for excess red common-spectrum signals …

The recent results on the baryon acoustic oscillations measurements from the DESI
collaboration have shown tantalizing hints for a time-evolving dark energy equation of state …

Inflationary models with a scalar field nonminimally coupled both with the Ricci scalar and
with the Gauss–Bonnet term are studied. We propose the way of generalization of …

The study of reheating in inflationary models is crucial to understand the early universe and
obtain information about the dynamics and parameters of inflation. The reheating …

A unified multiscalar field model with three flat regions is discussed. The three flat regions
are the inflation, early-and late dark energy epochs. The potential is obtained by a …

Recently a new kind of quintessential inflation coming from the Lorentzian distribution has
been introduced in [1, 2]. The model leads to a very simple potential, which basically …

We perform a Bayesian study of a generalization of the basic α-attractor T model given by
the potential V (ϕ)= V 0 [1-sech p (ϕ/√(6α) M pl)] where ϕ is the inflaton field and the …

Defining a scale of k-modes of the quantum fluctuations during inflation through the
dynamical horizon crossing condition k= aH we go from the physical t variable to k variable …

We study the observational constraints on single-field inflationary models achievable with
the next generation of cosmic microwave background (CMB) experiments. We focus on a …

In this work we revisit $\alpha $-Starobinsky inflation, also know as $ E $-model, in the light
of current CMB and LSS observations. The inflaton potential in the Einstein frame for this …