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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…