119 citations · 493 across the 30 of their papers we have counts for
28 papers
MacDowell-Mansouri -model
Egor Pluzhnikov, Stanislav Alexeyev
Standard pre-geometric mechanisms reproduce the ΛCDM model but lack a natural source for inflation. We propose a mechanism for the emergence of scalar-coupled topological terms by…
Non-minimal Effective Scalar-Tensor Gravity in the Early Universe
Oleg Zenin, Roman Stamov, Sergey Kuzmin +1
We study the consistency of several early-Universe scenarios within a framework of non-minimal effective sca\-lar--ten\-sor gravity. We show that bounce, inflation, and genesis sta…
Constraints of extended gravity theory in the regime of Universe accelerated extension: turnaround radius
Oleg Zenin, Stanislav Alexeyev
Applying the definition of the turnaround radius and the fact that the best agreement with observational data on extragalactic scales is currently provided by general relativity wi…
Black Hole Shadows Modelling in Extended gravity: Rotation Accounting and coupled effects
Stanislav Alexeyev, Oleg Zenin, Artem Baiderin
Using an improved version of the Newman-Janis algorithm, we obtain metrics of rotating black holes for a set of extended gravity theories that extend general relativity in differen…
Extended Gravity and Black Hole Shadows: Rotation Accounting
Stanislav Alexeyev, Oleg Zenin, Artem Baiderin
We obtain black hole rotating solutions for Horndesky theory (specific partial case), bumblebee model and Gauss-Bonnet scalar gravity using the specially improved Newman-Janis algo…
Non-local gravitational corrections in black hole shadow images
Stanislav Alexeyev, Artem Baiderin, Alexandra Nemtinova +1
With the help of Newman-Janis method new spinning black hole (BH) solution for a non-local gravity model was obtained. We show how to account the quantum gravitational correction p…