880 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Saudi Center for Theoretical PhysicsSA54 papers
- Chouaib Doukkali UniversityMA33 papers
- King Abdullah University of Science and TechnologySA29 papers
- Massachusetts Institute of TechnologyUS17 papers
- Georgia Institute of TechnologyUS16 papers
- King Faisal UniversitySA12 papers
- Shura CouncilSA11 papers
- National University of SingaporeSG9 papers
- Northeastern UniversityUS9 papers
- Academy of Sciences Republic of UzbekistanUZ7 papers
- National University of Sciences and TechnologyPK7 papers
- Quaid-i-Azam UniversityPK7 papers
14 papers · 1 filter
A New Formula for the BER of Binary Modulations with Dual-Branch Selection over Generalized-K Composite Fading Channels
Imran Shafique Ansari, Saad Al-Ahmadi, Ferkan Yilmaz +2
Error performance is one of the main performance measures and derivation of its closed-form expression has proved to be quite involved for certain systems. In this letter, a unifie…
Dynamical mass generation via space compactification in graphene
A. D. Alhaidari, A. Jellal, E. B. Choubabi +1
Fermions in a graphene sheet behave like massless particles. We show that by folding the sheet into a tube they acquire non-zero effective mass as they move along the tube axis. Th…
Singular Short Range Potentials in the J-Matrix Approach
M. S. Abdelmonem, I. Nasser, H. Bahlouli +2
We use the tools of the J-matrix method to evaluate the S-matrix and then deduce the bound and resonance states energies for singular screened Coulomb potentials, both analytic and…
Asymptotic Behaviour of the Proper Length and Volume of the Schwarzschild Singularity
Asghar Qadir, Azad A. Siddiqui
Though popular presentations give the Schwarzschild singularity as a point it is known that it is spacelike and not timelike. Thus it has a "length" and is not a "point". In fact,…
A Zariski Topology for Modules
Jawad Abuhlail
Given a duo module over an associative (not necessarily commutative) ring a Zariski topology is defined on the spectrum of {\it fully prim…
Relativistic Coulomb problem for Z larger than 137
A. D. Alhaidari
We propose a relativistic one-parameter Hermitian theory for the Coulomb problem with an electric charge greater than 137. In the non-relativistic limit, the theory becomes identic…
Comments on matter collineations of plane symmetric, cylindrically symmetric and spherically symmetric spacetimes
Asghar Qadir, K. Saifullah
Comments are made on some recently published papers on matter collineations of plane symmetric, cylindrically symmetric and spherically symmetric spacetimes.
Extending the class of solvable potentials: III. The hyperbolic single wave
H. Bahlouli, A. D. Alhaidari
A new solvable hyperbolic single wave potential is found by expanding the regular solution of the 1D Schrödinger equation in terms of square integrable basis. The main characterist…
Extending the class of solvable potentials: II. Screened Coulomb potential with a barrier
A. D. Alhaidari
This is the second article in a series where we succeed in enlarging the class of solvable problems in one and three dimensions. We do that by working in a complete square integrab…
Dirac equation with coupling to 1/r singular vector potentials for all angular momenta
A. D. Alhaidari
We consider the Dirac equation in 3+1 dimensions with spherical symmetry and coupling to 1/r singular vector potential. An approximate analytic solution for all angular momenta is…
J-matrix method of scattering in one dimension: The nonrelativistic theory
A. D. Alhaidari, H. Bahlouli, M. S. Abdelmonem
We formulate a theory of nonrelativistic scattering in one dimension based on the J-matrix method. The scattering potential is assumed to have a finite range such that it is well r…
Relativistic Double Barrier Problem with Three Sub-Barrier Transmission Resonance Regions
A. D. Alhaidari, H. Bahlouli, A. Jellal
We obtain exact scattering solutions of the Dirac equation in 1+1 dimensions for a double square barrier vector potential. The potential floor between the two barriers is higher th…
On and related Diophantine equations
A. Laradji, M. Mignotte, N. Tzanakis
The title equation, where is a prime number , is an odd prime number and are positive integers with relatively prime, is studied. When…
Elementary Trigonometric Sums related to Quadratic Residues
A. Laradji, M. Mignotte, N. Tzanakis
Let p be a prime = 3 (mod 4). A number of elegant number-theoretical properties of the sums T(p) = \sqrt{p}sum_{n=1}^{(p-1)/2} tan(n^2π/p) and C(p) = \sqrt{p}sum_{n=1}^{(p-1)/2} co…