38 citations · 47 across the 8 of their papers we have counts for
8 papers
Inflation from Covariant Signature Change: A Geometric Mechanism
Raghvendra Singh, Sergey Bondarenko
We present a covariant mechanism in which a smooth change of metric signature, from a Euclidean to a Lorentzian regime, drives a finite interval of accelerated expansion. The trans…
A realistic photon spectra in polarized γγ processes in SANCphot
Sergey G. Bondarenko, Aidos Issadykov, Lidia V. Kalinovskaya +1
This work presents an approach to improve the precision of polarized photon-photon collisions simulation implemented in the SANCphot package. The basic linear Compton approximation…
Modeling an internal structure of a black hole using a thermodynamic quasi-particle model
Sergey Bondarenko, Dima Cheskis, Raghvendra Singh
We develop an effective thermodynamic model for a black-hole interior composed of scalar quasiparticles. The interior is represented by two regions: a dense core and a surrounding…
Two-loop QED/QCD corrections for polarized process in SANCphot
Serge Bondarenko, Aidos Issadykov, Lidia Kalinovskaya +2
The new version of the SANCphot integrator has been prepared for fast and stable numerical calculations up to two loops for polarized light-by-light scattering. One-loop modules ba…
Graviton reggeization and high energy gravitational scattering of scalar particles
Sergey Bondarenko
In this paper we consider a high energy scattering of free scalar particles through a gravitational field. The one particle t-channel amplitude of the scattering in this limit is g…
Monte-Carlo tool SANCphot for polarized collision simulation
Serge Bondarenko, Lidia Kalinovskaya, Andrey Sapronov
Our study of theoretical uncertainties for the four bosons processes at one-loop level including the case of the transverse polarization is presented. The calculations are based on…