activity
19982026
most citedProbing quantum gravity using photons from a flare of the active galactic nucleus Markarian 501 observed by the MAGIC telescope

230 citations · 2.6k across the 60 of their papers we have counts for

collaborators

60 papers

astro-ph.CO2026

Hubble Tension as an Effect of Horizon Entanglement Nonequilibrium

Alexander S. Sakharov, Rostislav Konoplich, Merab Gogberashvili +1

We propose an infrared mechanism for alleviating the Hubble constant tension, based on a small departure from entanglement equilibrium at the cosmological apparent horizon. If the…

astro-ph.HE2025★ 3 cited

Ultra High Energy Neutrino Event KM3-230213A as a Signal of Electroweak Vacuum Turbulence in Merging Black Hole Binaries

Alexander S. Sakharov, Rostislav Konoplich, Merab Gogberashvili

The recent detection of the ultra-high-energy neutrino event KM3-230213A (220 PeV) by KM3NeT telescope poses a challenge to conventional astrophysical models, particularly in…

hep-ph2024

Black Holes and Baryon Number Violation: Unveiling the Origins of Early Galaxies and the Low-Mass Gap

Merab Gogberashvili, Alexander S. Sakharov

We propose that modifications to the Higgs potential within a narrow atmospheric layer near the event horizon of an astrophysical black hole could significantly enhance the rate of…

astro-ph.HE2024★ 2 cited

Probing Lorentz invariance with a high-energy neutrino flare

Mauricio Bustamante, John Ellis, Rostislav Konoplich +1

Time-of-flight measurements of high-energy astrophysical neutrinos can be used to probe Lorentz invariance, a pillar of modern physics. If Lorentz-invariance violation (LIV) occurs…

astro-ph.CO2024★ 1 cited

Primordial Black Holes from Spatially Varying Cosmological Constant Induced by Field Fluctuations in Extra Dimensions

Arkady A. Popov, Sergey G. Rubin, Alexander S. Sakharov

The origin and evolution of supermassive black holes (SMBHs) in our universe have sparked controversy. In this study, we explore the hypothesis that some of these black holes may h…

hep-ph2023

Study of exclusive two-body W decays with fully reconstructible kinematics

Alsu G. Bagdatova, Sergey P. Baranov, Alexander S. Sakharov

In the framework of electroweak theory and perturbative quantum chromodynamics, we examine various exclusive decay channels of bosons that can be fully or partially reconstruct…