97 citations · 349 across the 12 of their papers we have counts for
12 papers
On particle dynamics near the singularity inside the Schwarzschild black hole and T-spheres
A. Radosz, A. V. Toporensky, O. B. Zaslavskii
The problem of the speed of the objects inside the Schwarzschild black hole is considered. The general result is that the value of the relative speed of the objects following their…
Flow and peculiar velocities for generic motion in spherically symmetric black holes
A. Toporensky, O. Zaslavskii
In this methodological paper we consider geodesic motion of particles in a spherically symmetric black hole space-times. We develop an approach based on splitting the velocity of a…
Generality of Starobinsky and Higgs inflation in the Jordan frame
Swagat S. Mishra, Daniel Müller, Aleksey V. Toporensky
We revisit the problem of generality of Starobinsky and Higgs inflation. The known results obtained in the Einstein frame are generalized for the case of an arbitrary initial energ…
Anisotropic cosmological solutions in gravity
Daniel Müller, Angelo Ricciardone, Alexei A. Starobinsky +1
In this paper we investigate the past evolution of an anisotropic Bianchi I universe in gravity. Using the dynamical system approach we show that there exists a new two-par…
Arrow of time in dissipationless cosmology
Varun Sahni, Yuri Shtanov, Aleksey Toporensky
It is generally believed that a cosmological arrow of time must be associated with entropy production. Indeed, in his seminal work on cyclic cosmology, Tolman introduced a viscous…
Refining inflation using non-canonical scalars
Sanil Unnikrishnan, Varun Sahni, Aleksey Toporensky
This paper revisits the Inflationary scenario within the framework of scalar field models possessing a non-canonical kinetic term. We obtain closed form solutions for all essential…