1.5k citations · 5.8k across the 38 of their papers we have counts for
36 papers
Cosmology in nonlocal gravity
Alexey S. Koshelev, K. Sravan Kumar, Alexei A. Starobinsky
In this chapter we review the recent developments of realizing -like inflation in the framework of a most general UV nonlocal extension of Einstein's general theory of relativ…
Non-Gaussianities and tensor-to-scalar ratio in non-local -like inflation
Alexey S. Koshelev, K. Sravan Kumar, Anupam Mazumdar +1
In this paper we will study -like inflation in a non-local modification of gravity which contains quadratic in Ricci scalar and Weyl tensor terms with analytic infinite deriva…
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…
Induced gravity, and minimally and conformally coupled scalar fields in Bianchi-I cosmological models
A. Yu. Kamenshchik, E. O. Pozdeeva, A. A. Starobinsky +3
We study the cosmological evolution and singularity crossing in the Bianchi-I universe filled with a conformally coupled scalar field and compare them with those of the Bianchi-I u…
Bouncing Universes in Scalar-Tensor Gravity Models admitting Negative Potentials
B. Boisseau, H. Giacomini, D. Polarski +1
We consider the possibility to produce a bouncing universe in the framework of scalar-tensor gravity models in which the scalar field potential may be negative, and even unbounded…
Quasi-isotropic expansion for a two-fluid cosmological model containing radiation and string gas
I. M. Khalatnikov, A. Yu. Kamenshchik, A. A. Starobinsky
The quasi-isotropic expansion for a simple two-fluid cosmological model, including radiation and string gas is constructed. The first non-trivial order expressions for the metric c…