51 citations · 121 across the 18 of their papers we have counts for
19 papers
Chiral Phase Structure and In-Medium Modifications of Charmed Meson Masses within SU(4) extended Linear-Sigma Models
Nourhan M. Rfeek, Alexandra Friesen, Yuri Kalinovsky +4
We extend the Polyakov-loop-enhanced linear-sigma model to encompass four flavors and utilize it to analyze the light, strange, and charmed meson mass spectrum as it transitions fr…
Cosmology of f(Q,L_m) gravity with Holographic Ricci Dark Energy: Early-Time Inflation and Late-Time Acceleration and RGUP Corrected Observables
Khandro K Chokyi, Abdel Nasser Tawfik, Surajit Chattopadhyay
This study investigates a cosmological scenario within the f(Q,L_m) gravity framework to explore whether one geometric model can simultaneously describe the early and late-time acc…
Reevaluation of Inflationary Dynamics in Extended General Relativity with Perturbatively and Tensorially Structured Conformal Metric
Swapnil K. Singh, Saleh O. Allehabi, Azzah A. Alshehri +2
Based on the conventional metric tensor and driven by a nearly constant energy density, cosmic inflation, characterized by a remarkably accelerated expansion, was proposed as an ea…
A Study of Non-Singular Bounce in Myrzakulov-type Gravity with Chaplygin Gas
Khandro K Chokyi, Abdel Nasser Tawfik, Surajit Chattopadhyay
This study investigates the non-singular bounce within the framework of Myrzakulov-type gravity by adopting a Chaplygin gas equation of state. We employ tw…
Quantum-Deformed Phase-Space Geometry and Emergent Inflation in Effective Four-Dimensional Spacetime
Swapnil Kumar Singh, Saleh O. Allehabi, Azzah A. Alshehri +3
We develop a phase-space approach to quantum-deformed gravity. Reducing it to an effective four-dimensional spacetime structure facilitates reanalyzing cosmic inflation and quantum…
The Derivation of Phase-Space Metric in a Geometric Quantization Approach: General Relativity with Quantized Phase-Space Metric and Relative Spacetime
Kareem Mubaidin, Debarshi Mukherjee, Saleh O. Allehabi +4
Various extensions to Riemann geometry have been proposed since the inception of general relativity (GR). The aim has been and continues to be to construct a quantum and dynamic sp…
Temperature Dependence of the Masses of Various Meson States: A Comparative Study in SU(3) and SU(4) extended Linear-Sigma Model
Alexandra Friesen, Yu. Kalinovsky, Saleh O. Allehabi +3
In the extended Linear-Sigma Model (eLSM), the chiral phase structure of meson states, including pseudoscalars (), scalars (), vectors ($J^{pc}=1^{--}…
Expansion Evolution of Nonhomogeneous Metric with Quantum-Mechanically Revisited Fundamental Metric Tensor
Abdel Nasser Tawfik, Azzah A. Alshehri, Antonio Pasqua
To explore the properties of space and initial singularities in the context of general relativity, where spacetime becomes poorly defined and no longer belongs to a regular manifol…
The study of strongly intensive observables for in collisions at LHC energy in the framework of PYTHIA model
Tumpa Biswas, Dibakar Dhar, Azharuddin Ahmed +2
The fractal and phase transitional properties of each type of pions (i.e. ) through one-dimensional space, at an energy of TeV, have been studied with…
Mass Spectrum of Non-Charmed and Charmed Meson States in Extended Linear-Sigma Model
Azar I. Ahmadov, Azza A. Alshehri, Abdel Nasser Tawfik
The mass spectrum of different meson particles is generated using an effective Lagrangian of the extended linear-sigma model (eLSM) for scalar and pseudoscalar meson fields and qua…
Particle Ratios within a statistically corrected hadron resonance gas model and EPOS event-generator at AGS, SPS, RHIC and LHC Energies
Mahmoud Hanafy, Abdel Nasser Tawfik, Muhammad Maher
We further investigate the applicability of our previously suggested quantum-mechanically correlated statistical hadron gas model (HRG) to the ideal hadron resonance gas model (IHR…
Comment on "Investigation of Hadron Multiplicity and Hadron Yield Ratios in Heavy-Ion Collisions"
A. Tawfik, H. Magdy, E. Gamal
Oliinychenko, Bugaev and Sorin [arXiv:1204.0103 [hep-ph]] considered the role of conservation laws in discussing possible weaknesses of thermal models which are utilized in describ…
Quantum Gravity effect on the Quark-Gluon Plasma
I. Elmashad, A. Farag Ali, L. I. Abou-Salem +2
The Generalized Uncertainty Principle (GUP), which has been predicted by various theories of quantum gravity near the Planck scale is implemented on deriving the thermodynamics of…
Quark-Hadron Phase Transitions in Viscous Early Universe
A. Tawfik, T. Harko
Based on hot big bang theory, the cosmological matter is conjectured to undergo QCD phase transition(s) to hadrons, when the universe was about s old. In the present work,…
The Hubble parameter in the early universe with viscous QCD matter and finite cosmological constant
A. Tawfik
The evolution of a flat, isotropic and homogeneous universe is studied. The background geometry in the early phases of the universe is conjectured to be filled with causal bulk vis…
Hubble Parameter in QCD Universe for finite Bulk Viscosity
A. Tawfik, M. Wahba, H. Mansour +1
We consider the influence of the perturbative bulk viscosity on the evolution of the Hubble parameter in the QCD era of the early Universe. For the geometry of the Universe we assu…
Thermodynamics in the Viscous Early Universe
A. Tawfik
Assuming that the matter filling the background geometry in the Early Universe was a free gas and no phase transitions took place, we discuss the thermodynamics of this closed syst…
Cosmological Consequences of QCD Phase Transition(s) in Early Universe
A. Tawfik
We discuss the cosmological consequences of QCD phase transition(s) on the early universe. We argue that our recent knowledge about the transport properties of quark-gluon plasma (…
Black Box QGP
A. Tawfik
According to extensive ab initio calculations of lattice QCD, the very large energy density available in heavy-ion collisions at SPS and now at RHIC must be sufficient to generate…