234 citations · 2.9k across the 57 of their papers we have counts for
58 papers
Visions in Quantum Gravity
Luca Buoninfante, Benjamin Knorr, K. Sravan Kumar +36
To deepen our understanding of Quantum Gravity and its connections with black holes and cosmology, building a common language and exchanging ideas across different approaches is cr…
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…
Post-inflationary GW production in generic higher (infinite) derivative gravity
Alexey S. Koshelev, Alexei A. Starobinsky, Anna Tokareva
Gravity can be embedded into a renormalizable theory by means of adding quadratic in curvature terms. However, this at first leads to the presence of the Weyl ghost. It is possible…
Non-Gaussianities in generalized non-local -like inflation
Alexey S. Koshelev, K. Sravan Kumar, Alexei A. Starobinsky
In [1], a most general higher curvature non-local gravity action was derived that admits a particular -like inflationary solution predicting the spectral index of primordial s…
Generalized non-local -like inflation
Alexey S. Koshelev, K. Sravan Kumar, Alexei A. Starobinsky
The inflation which is an extension of general relativity (GR) by quadratic scalar curvature introduces a quasi-de Sitter expansion of the early Universe governed by Ricci sc…
Confining complex ghost degrees of freedom
Marco Frasca, Anish Ghoshal, Alexey S. Koshelev
We show a theorem proving that a non-local bosonic field upon a covariant interaction with a confining gauge field undergoes the confinement of its degrees of freedom present in th…