73 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- C. Bambi26 · h 50
- J. Rayimbaev2 profiles18 · h 23
- A. Abdujabbarov11 · h 41
- G. Mustafa4 profiles10 · h 35
- B. Ahmedov2 profiles9 · h 42
- Honghui Liu9 · h 13
- Farruh Atamurotov8 · h 37
- M. Koussour3 profiles7 · h 24
- Swarnim Shashank7 · h 7
- Askar B. Abdikamalov2 profiles6 · h 20
- H. Chaudhary6 · h 15
- U. Debnath6 · h 30
- National University of UzbekistanUZ92 papers
- Fudan UniversityCN26 papers
- Ulugh Beg Astronomical InstituteUZ21 papers
- Tashkent Institute of Irrigation and Agricultural Mechanization EngineersUZ15 papers
- Tashkent State Technical University named after Islam KarimovUZ15 papers
- University of TübingenDE12 papers
- Zhejiang Normal UniversityCN12 papers
- Inha University in TashkentUZ9 papers
- L. N. Gumilyov Eurasian National UniversityKZ9 papers
- Harbin Institute of TechnologyCN8 papers
- Westminster International University in TashkentUZ8 papers
- University of Hassan II CasablancaMA7 papers
92 papers
Lorentz-Covariant Spectral Bounds from Thermal Quantum Field Theory
Alisher Sanetullaev, Sarbinaz Bazarbaeva, Marhabo Beymamatova +1
We derive rigorous Lorentz-covariant bounds on relaxation spectra directly from the analytic structure of retarded Green's functions in thermal quantum field theory, using only cau…
Lorentz-Covariant Spectral Bounds from Thermal Quantum Field Theory: Retarded Green's Functions, Kubo Relations, and Holographic Constraints
Alisher Sanetullaev, Sarbinaz Bazarbaeva, Marhabo Beymamatova +1
We extend the recently established framework of Lorentz-covariant relaxation bounds from linearized classical kinetic and rheological theories to the full quantum setting of therma…
Acausal exact vacuum solutions in nonlocal gravity
Zhe Zhao, Leonardo Modesto, Cosimo Bambi
Nonlocal gravity is a promising super-renormalizable or finite quantum gravity theory consistent with unitarity. In this paper, we focus on the classical equations of motion and ex…
Grey-Body Factors and Thermodynamics of Asymptotically de Sitter Black Holes in Generalized Proca Theory
Bekir Can Lütfüoğlu, Javlon Rayimbaev, Nuriddin Kurbonov +2
Generalized Proca theory supplements gravity with a massive vector field whose derivative self-interactions can support black holes carrying primary vector hair. In the asymptotica…
A Pedagogical MKS-based Electromagnetic Unit Convention with
Alisher Sanetullaev
We propose a pedagogical, rationalized MKS-based convention for electromagnetic quantities designed to reduce cognitive load in undergraduate undergraduate electromagnetism. By set…
A First-Order Eikonal Framework for Quasinormal Modes, Shadows, Strong Lensing, and Grey-Body Factors in a Scalarized Black-Hole Metric
Bekir Can Lütfüoğlu, Javlon Rayimbaev, Sardor Murodov +2
We construct an analytic geodesic-optics description of quasinormal ringing, black-hole shadows, strong lensing, and grey-body factors for the static spherical metric introduced in…
Improved Constraints on Non-Kerr Deviations from Binary Black Hole Inspirals Using GWTC-4 Data
Debtroy Das, Swarnim Shashank, Cosimo Bambi
Gravitational wave (GW) observations of binary black hole (BBH) mergers provide a unique opportunity to probe the nature of spacetime in the strong-field and dynamical regime. We p…
Hybrid Photonic Quantum Reservoir Computing for High-Dimensional Financial Surface Prediction
Fyodor Amanov, Azamkhon Azamov
We propose a hybrid photonic quantum reservoir computing (QRC) framework for swaption surface prediction. The pipeline compresses 224-dimensional surfaces to a 20-dimensional laten…
Josephson Effects in Slowly Rotating Spacetimes
Nurmukhammed Aytimbetov, Reggie C. Pantig, Ali Övgün +2
We investigate Josephson phenomena in a slowly rotating stationary spacetime, emphasizing the distinct roles of gravitational redshift and rotational frame dragging motivated by [1…
Ringing Regularity: Gravitational Perturbations and Quasinormal Modes of Einasto-Supported Black Holes
Bekir Can Lütfüoğlu, Javlon Rayimbaev, Sardor Murodov +2
We investigate axial gravitational perturbations and quasinormal modes of regular black holes supported by an Einasto distribution of matter. Halo matter not only removes the centr…
Horizon-Brightened Acceleration Radiation and Optical Signatures of Generic Regular Black Holes from Nonlinear Electrodynamics
Uktamjon Uktamov, Ali Övgün, Reggie C. Pantig +1
We investigate horizon-brightened acceleration radiation (HBAR) and optical signatures for a broad class of regular black holes sourced by nonlinear electrodynamics. The spacetimes…
Testing non-circular black hole spacetime with X-ray reflection
Leda Gao, Swarnim Shashank, Cosimo Bambi
X-ray reflection spectroscopy is a powerful tool for testing the Kerr hypothesis and probing the strong gravity regime around accreting black holes. Most tests of General Relativit…
Two types of quasinormal modes of Casadio-Fabbri-Mazzacurati brane-world black holes
Bekir Can Lütfüoğlu, Sardor Murodov, Mardon Abdullaev +3
Using the convergent Leaver method, we investigate the quasinormal modes of a massive scalar field propagating in the background of the Casadio--Fabbri--Mazzacurati (CFM) brane-wor…
Dynamical response of twin stars to perturbations
Shamim Haque, Luciano Rezzolla, Ritam Mallick
If a strong first-order phase transition takes place at sufficiently high rest-mass densities in the equation of state (EOS) modelling compact stars, a new branch will appear in th…
Searching for Isolated Black Hole Candidates within 15 pc of the Solar System in Gaia DR3
Abdurakhmon Nosirov, Cosimo Bambi, Leda Gao +4
Theoretical models predict that the Galaxy hosts - black holes formed from the complete gravitational collapse of heavy stars and that most of these black holes are iso…
Assessing systematic uncertainties from spectral re-analysis of Cyg X-1 with different coronal geometries
Abdurakhmon Nosirov, Jiachen Jiang, Cosimo Bambi +1
In this work, we carry out a new spectral reanalysis of NuSTAR and Suzaku observations of the disk reflection spectra in the stellar-mass black hole X-ray binary Cyg~X-1. We compar…
Single-shot near-field reconstruction of metamaterial dispersion
Eugene Koreshin, Denis Sakhno, Jim A. Enriquez +1
We present a single-shot near-field technique, where the near-field scan is performed on a single sample without repeating measurements or averaging over multiple samples, to recon…
Taming singularities and chaos in conformal gravity
Jiale Gu, Leonardo Modesto, Cosimo Bambi
We hereby address the cosmological singularity problem in a general gravitational theory invariant under Weyl conformal transformations. In particular, we focus on the Bianchi IX s…
Can a Dehnen-type dark matter halo affect the neutrino flavor oscillations?
Mirzabek Alloqulov, Ahmadjon Abdujabbarov, Bobomurat Ahmedov +1
The gravitational weak lensing of neutrinos in the presence of a Schwarzschild black hole surrounded by a Dehnen-type dark matter halo is investigated. The event horizon structure…
Charged particle bound orbits around magnetized Schwarzschild black holes: S2 star and hotspot applications
Uktamjon Uktamov, Mohsen Fathi, Javlon Rayimbaev
The dynamics of charged particles around magnetized black holes provide valuable insights into astrophysical processes near compact objects. In this work, we investigate the bound…
A Simple and Reproducible Hybrid Solver for a Truck-Drone VRP with Recharge
Meraryslan Meraliyev, Cemil Turan, Shirali Kadyrov
We study last-mile delivery with one truck and one drone under explicit battery management: the drone flies at twice the truck speed; each sortie must satisfy an endurance budget;…
Thermodynamics of Einstein-Geometric Proca AdS compact objects
Asalkhon Alimova, Elham Ghorani, Beyhan Puliçe +2
In this study we explore metric-Palatini gravity extended by the antisymmetric component of the affine curvature. This gravitational theory results in general relativity plus a geo…
Spin Constraints on 4U 1630-47 via combined Continuum Fitting and Reflection methods: a comparative study using Frequentist and Bayesian statistics
Debtroy Das, Honghui Liu, Zuobin Zhang +5
We present a comprehensive Bayesian spectral analysis of the black hole X-ray binary 4U 1630-47 during its 2022 outburst, using simultaneous NICER and NuSTAR observations. Using th…
Stellar-Mass Black Holes
Cosimo Bambi
Stellar-mass black holes ( ) are the natural product of the evolution of heavy stars ( ). I…