260 citations · 1.9k across the 67 of their papers we have counts for
72 papers
Edge photocurrent distribution in luminescent solar concentrators: analytical treatment and solar cell arrangement
Ilya Sychugov
In luminescent solar concentrators (LSCs), the light flux along the edges is non-uniform, which causes current mismatch between series-connected edge solar cells. Here, the optical…
Primordial black holes and scalar-induced gravitational waves in the supersymmetric 331 model from SU(6)
Imtiaz Khan, Niamat Ullah, Ali Muhammad +4
We study primordial black holes and scalar-induced gravitational waves in the supersymmetric 331 model based on SU(6). The inflaton continues to be the D-flat radial combination of…
Elastic toroidal vector dark matter through a dark photon in the LUX-ZEPLIN high recoil window
Imtiaz Khan, Salvatore Capozziello, G. Mustafa +4
The 2026 LUX-ZEPLIN search reports one nuclear recoil candidate at in an extended window reaching about . We con…
LZ-Motivated Pseudo-Dirac Higgsinos in the Supersymmetric 331 Model from the Supersymmetric \texorpdfstring{}{SU(6)} GUT Model
Imtiaz Khan, Ali Muhammad, G. Mustafa +3
The high-recoil event reported by LUX--ZEPLIN motivates a neutral electroweak state with an inelastic splitting in the sub-MeV range. We propose supersymmetric 331 model from the s…
Dynamical Structure of Einasto Dark Matter Wormholes: Thin-Shell Stability and Particle Transitions
M. Yousaf, Faisal Javed, Gulzoda Rakhimova +2
In this manuscript, we develop topologically charged static and spherically symmetric wormhole (WH) configurations in Einstein gravity by employing the Einasto dark matter profile…
Nuclear interference versus dark sector excitation in the 248 keV LUX-ZEPLIN recoil candidate
Imtiaz Khan, Salvatore Capozziello, G. Mustafa +3
The 2026 LUX-ZEPLIN (LZ) high energy nuclear recoil search reports one event at and finds the elastic isovector interaction $\math…
Finite-duration non-slow-roll effects in inflationary production of ultralight vector dark matter
Imtiaz Khan, Niamat Ullah, Chengxun Yuan +3
Inflationary production of ultralight vector dark matter can be amplified by a brief non-slow-roll phase, yet instantaneous mass transitions generate ultraviolet ringing and leave…
Energy extraction processes and thermodynamics in rotating Weyl conformal black holes
Dilmurod Ortiqboev, Farruh Atamurotov, Ahmadjon Abdujabbarov +2
This work investigates the original Penrose process (PP), as well as black hole (BH) thermodynamics, within the framework of conformal Weyl gravity. The theory is characterized by…
Lorentz Symmetry Breaking Traversable Wormhole Models Supported by Einasto Dark Matter
Rana Muhammad Zulqarnain, M. Yousaf, Allah Ditta +3
We investigate static, spherically symmetric traversable wormholes in Kalb Ramond gravity, where spontaneous Lorentz symmetry breaking arises from a non-vanishing vacuum expectatio…
Probing scalarized wormholes through quasi-periodic oscillations and spinning particle dynamics
Asalkhon Alimova, Akbar Davlataliev, Farruh Atamurotov +3
We investigate the dynamics of test particles in a three-parameter scalarized wormhole spacetime within Einstein-scalar field theory. For spinless particles, we derive the orbital…
Coherent and Stochastic Axion Dark Matter from Thermal Relaxation
Shahid Hussain Gurmani, Arzu Cilli, Phongpichit Channuie +3
An axion driven toward a thermal minimum need not remain a coherent condensate. We derive the coupled attenuation of the field mean and production of stochastic momentum modes in a…
Thermal Alignment as a Pathway to Axion Dark Matter
Imtiaz Khan, G. Mustafa, Chengxun Yuan +3
Thermal alignment cannot be inferred from the axion mean alone because the dissipative bath that erases the initial displacement also prepares field and momentum fluctuations. We d…
Testing the Direction of Dark Sector Interaction Using Late-Time Datasets
Anil Kandel, Phongpichit Channuie, Ertan Güdekli +1
In this work, we constrain the phenomenological interacting dark energy IDE model using baryon acoustic oscillation measurements from DESI Data Release 1 and Data Release 2, com…
Conformal dark matter and MHz gravitational waves
Imtiaz Khan, Niamat Ullah, Salvatore Capozziello +2
A localized enhancement of the primordial curvature spectrum can leave two distinct relics: gravitationally produced conformal-fermion dark matter and a scalar-induced stochastic g…
Scalar and Electromagnetic Perturbations around a Black Hole with a Topological Defect: Quasinormal Modes and Quasi-bound States in a Plasma Medium
Dilmurod Umarov, Farruh Atamurotov, Ahmadjon Abdujabbarov +2
We investigated the influence of a plasma environment on the optical and perturbative properties of a black hole with a topological defect, characterized by the parameter \(k\). We…
Parametric Resonance of Higgsed Vector Dark Matter: Inflationary Initial Conditions and Sourced Displacements
Imtiaz Khan, Salvatore Capozziello, G. Mustafa +2
Parametric resonance in a Higgsed Abelian sector provides an efficient mechanism for producing vector dark matter, but its viability depends crucially on the origin of the initial…
CMB Test of the Higgs Origin of Dark-Photon Dark Matter
Imtiaz Khan, Salvatore Capozziello, G. Mustafa +2
Laboratory searches determine the mass and kinetic mixing of dark-photon dark matter. The CMB isocurvature probes how its abundance depends on inflationary initial conditions. We f…
Long Inflation Screens Euclidean-Wormhole Initial States
Imtiaz Khan, Pirzada, G. Mustafa +2
Euclidean wormholes can prepare inflation in non--Bunch--Davies initial states, but long Lorentzian expansion screens this memory from the CMB. We derive a visibility bound for Euc…
Dilaton-Induced Resonant Production of Ultralight Vector Dark Matter
Imtiaz Khan, G. Mustafa, Jehanzad Zafar +3
We consider the production of ultralight vector dark matter through a dilatonic half-mass resonance in the presence of an oscillating spectator scalar. The cosmological condition i…
Spinning Particles around Einstein-Geometric Proca AdS Compact Objects
Gulzoda Rakhimova, Beyhan Puliçe, Elham Ghorani +2
We investigate the dynamics of spinning test particles in the vicinity of Einstein--geometric Proca (EGP) Anti-de Sitter (AdS) compact objects, which arise from metric-Palatini gra…
Constraining -Exponential Inflation with the latest ACT observations
Jureeporn Yuennan, Farruh Atamurotov, Salvatore Capozziello +1
Recent observations from the Atacama Cosmology Telescope (ACT), especially when combined with DESI baryon acoustic oscillation data, indicate a scalar spectral index higher t…
Accretion flow around Kerr metric in the infra-red limit of asymptotically safe gravity
Orhan Donmez, Sushant G. Ghosh, M. Yousaf +2
We investigate accretion disk dynamics and the formation of quasi-periodic oscillations (QPOs) in the infrared limit around Kerr-like black holes in asymptotically safe gravity. Re…
Relativistic accretion process onto rotating black holes in Einstein-Euler-Heisenberg nonlinear electrodynamic gravity
Orhan Donmez, G. Mustafa, Himanshu Chaudhary +4
In this study, we uncover the accretion dynamics and oscillatory behavior around rotating black holes within the EEH nonlinear electrodynamic framework by analyzing both the motion…
Origin of Quasi-Periodic Oscillations and Accretion Process in X-Ray Binaries around Quantum Lee-Wick Black Hole
Orhan Donmez, G. Mustafa, M. Yousaf +3
In this study, we investigate the accretion dynamics and test particle motion around a non-rotating, spherically symmetric Lee-Wick black hole (BH) to reveal how the model paramete…