We explore the inflationary dynamics leading to formation of closed domain walls in course
of evolution of an axion like particle (ALP) field whose Peccei-Quinn-like phase transition …

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We consider classical dynamics of two real scalar fields within a model with the potential
having a saddle point. The solitons of such model are field configurations that have the form …

In this article we study a hypothetical possibility of tracking the evolution of our Universe by
introducing a series of the so-called standard timers. Any unstable primordial relics …

Field localization on 2-dim extra space is considered in the framework of f (R) gravity. It is
shown that interference of the local matter energy distribution and the metric of the extra …

A bstract In this paper we propose that artificial neural network, the basis of machine
learning, is useful to generate the inflationary landscape from a cosmological point of view …

In this paper we provide a general framework based on δN formalism to estimate the
cosmological observables pertaining to the cosmic microwave background radiation for non …

To clarify the observational consequences of bubble nucleations in an inflationary era, we
analyze the dynamics of a spherical domain wall in an expanding universe. We consider a …

Evidence for the primordial black holes (PBH) presence in the early Universe renews
permanently. New limits on their mass spectrum challenge existing models of PBH …

We generate random functions locally via a novel generalization of Dyson Brownian motion,
such that the functions are in a desired differentiability class C k, while ensuring that the …