2 citations · 7 across the 14 of their papers we have counts for
9 papers · 1 filter
Relational Wigner-Smith Duration in Wheeler-DeWitt Scattering
Daulet Berkimbayev
A closed Friedmann-Lemaitre-Robertson-Walker Wheeler-DeWitt model is formulated as an exact reflection problem. The derivative of its reflection phase defines a relational crossing…
Radiative Matching Across a Projector Bridge
Medeu E. Abishev, Daulet Z. Berkimbayev
Two distinct Einstein--Hilbert sectors are related by a covariant correspondence bridge that maps stress-energy through bitensor kernels. The Bianchi identities enforce conservatio…
Regular hairy black holes by gravitational decoupling: Bardeen and Minkowski-core seeds
Daulet Berkimbayev
We construct two families of regular hairy black holes within gravitational decoupling using a fixed exponential deformation profile for an effective tensor-vacuum sector. The firs…
Classical Corrections to Black Hole Entropy II
Daulet Berkimbayev, Martin Blaschke
We reconsider the classical one bit absorption model of black hole growth as a discrete recursion rather than a continuum equation. In this paper, one bit means one elementary abso…
DESI and Dynamical Dark Energy from Extended Pre-geometric Gravity
Andrea Addazi, Yermek Aldabergenov, Daulet Berkimbayev +3
We consider the simplest quadratic extension of MacDowell--Mansouri pre-geometric gravity that preserves the topological pre-volume-form symmetry. Upon symmetry breaking, the theor…
(Lovelock) inflation: explaining the ACT data and equivalence to Higgs-Gauss-Bonnet inflation
Andrea Addazi, Yermek Aldabergenov, Daulet Berkimbayev +1
We revisit the Starobinsky model of inflation in light of recent data from the Atacama Cosmology Telescope (ACT), which indicates a potential preference for a slightly larger scala…
Energy transfer between the sources in gravitational decoupling
Daulet Berkimbayev
A straightforward and fully analytic approach is introduced to examine how polytropic fluids influence arbitrary gravitational sources in static, spherically symmetric spacetimes.…
Effects of matter with anisotropic pressure on the Fan-Wang regular black hole shadows
Yergali Kurmanov, Orlando Luongo, Daulet Berkimbayev +4
We here investigate the consequences of an exotic fluid, exhibiting negative radial and tangential pressures, \emph{de facto} violating the Zel'dovich limit, on a regular solution…
More on gravitational waves from double monodromy inflation
Medeu Abishev, Aigerim Abylayeva, Andrea Addazi +2
We further analyze phenomenological implications of double axion monodromy inflation proposed in Ref. Phys. Rev. D 104, L081302 (2021), in gravitational wave physics. We show that…