43 citations · 105 across the 9 of their papers we have counts for
10 papers
Convergent sum of EFT corrections to Schwarzschild metric requires UV locality
Yang Liu, Alexey S. Koshelev, Anna Tokareva +1
Corrections to vacuum black hole solutions of general relativity (GR) are considered in an effective field theory (EFT) framework, perturbatively in EFT coefficients, focusing on t…
Scalar Quasinormal modes in Reissner--Nordström black holes: implications for Weak Gravity Conjecture
Giorgio Di Russo, Anna Tokareva
Microscopic charged black holes can provide possibilities to test the consistency of the effective field theory (EFT) corrections to Einstein-Maxwell theory. A particularly interes…
Energy conditions for regular black holes in EFT of gravity
Ziyue Zhu, Alexey S. Koshelev, Yang Liu +1
As Einstein's gravity is a non-renormalizable theory, it can be a good description of physics only at the scales of energy or spacetime curvature below the Planck mass. Moreover, i…
Quasi-normal modes in non-perturbative quantum gravity
Alexey S. Koshelev, Chenxuan Li, Anna Tokareva
Non-pertrubative quantum gravity formulated as a unitary four-dimensional theory suggests that certain amount of non-locality, such as infinite-derivative operators, can be present…
Secondary Gravitational Waves in Non-local Starobinsky inflation
Andrea Addazi, Alexey S. Koshelev, Shi Pi +1
We show how infinite derivative modifications of gravity impact on the stochastic background of Gravitational Waves from early Universe. The generic property of the ghost-free theo…
Non-perturbative quantum gravity denounces singular Black Holes
Alexey Koshelev, Anna Tokareva
Although General Relativity predicts the presence of a singularity inside of a Black Hole, it is not a complete theory of gravity. A real structure of a Black Hole interior near an…
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…
Unitarity of Minkowski non-local theories made explicit
Alexey S. Koshelev, Anna Tokareva
In this work we explicitly show that the perturbative unitarity of analytic infinite derivative (AID) scalar field theories can be achieved using a modified prescription for comput…
Non-local self-healing of Higgs inflation
Alexey S. Koshelev, Anna Tokareva
Higgs inflation is known to be a minimal extension of the Standard Model allowing for the description of the early Universe inflation. This model is considered as an effective fiel…
Cosmology with a light ghost
Mikhail M. Ivanov, Anna A. Tokareva
We study the creation and evolution of cosmological perturbations in renormalizable quadratic gravity with a Weyl term. We adopt a prescription that implies the stability of the va…