Now showing 1 - 2 of 2
  • Publication
    Thermal properties and mass spectra of heavy mesons in the presence of a Point-Like defect
    ( 2024)
    Etido P. Inyang
    ;
    ; ; ; ;
    N.R. Ali
    ;
    Muhammad Muhammad Asjad
    In this research, the radial Schr¨odinger equation is solved analytically using the Nikiforov-Uvarov method with the Cornell potential. The energy spectrum and the corresponding wave function are obtained in close form. The effect of Topological Defect on the thermal properties and mass spectra of heavy mesons such as charmonium and bottomonium are studied with the obtained energy spectrum. It is found that the presence of the Topological Defect increases the mass spectra and moves the values close to the experimental data. Our results agreed with the experimental data and are seen to be improved when compared with other works.
  • Publication
    Effects of applied magnetic field on the optical properties and binding energies spherical GaAs quantum dot with donor impurity
    ( 2022)
    Collins Okon Edet
    ;
    Emre Bahadir Al
    ;
    Fatih Ungan
    ;
    ; ; ; ;
    Muhammad Asjad
    The screened modified Kratzer potential (SMKP) model is utilized to scrutinize the impacts of an applied magnetic field (MF) on the binding energies and linear and nonlinear optical properties spherical GaAs quantum dot with donor impurity (DI). To accomplish this goal, we have used the diagonalization method to numerically solve the Schrödinger equation under the effective mass approximation for obtaining the electron energy levels and related electronic wave functions. The expressions used for evaluating linear, third-order nonlinear, and total optical absorption coefficients and relative refractive index changes were previously derived within the compact density matrix method. It has been shown here that the MF and DI impacts the characteristics of the absorption coefficients and the refractive index changes. This study’s results will find application in optoelectronics and related areas.
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