An-Najah National University

Professor Sami M. AL-Jaber - Physics Department

Editorial Board member of Journal of Modern Physics (JMP). Recipient of PFDP Teaching Excellence Award 2010.

  • Wednesday, December 15, 2010
  • Some remarks on approximation methods for quantum systems in higher space dimensions
  • Published at: Sami M. AL-Jaber, JAAUBAS, (2010) 9, 18-22
  • Abstract We consider the effect of space dimension N, on the results predicted by two approximation techniques applied on physical quantum systems. In the first, we apply degenerate perturbation theory to perturbed N-dimensional infinite cubical well. It is found that the energy difference for splitting decreases as N increases and it vanishes in the infinite dimensional space. In the second, we apply the sudden approximation to the electronic structure change implied by beta-decay of the tritium nucleus. It is found that as N increases the ionization probability increases.
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  • Wednesday, September 15, 2010
  • Variational method for ground-state energy of helium atom in N dimensions
  • Published at:IL NUOVO CIMENTO Vol. 125 B, N. 9, (2010).
  • Sami M. AL-Jaber(∗)
    Department of Physics, An-Najah National University - P.O. Box 7, Nablus, Palestine.
    Abstract: The ground-state energy of the N-dimensional helium atom is presented
    by applying the variational principle. The calculations are made for the
    unscreened and screened cases. It is shown that, in both cases, the magnitude of
    the ground-state energy decreases (less negative) as the spatial dimension N increases.
    For the unscreened case, the relative contribution of the electron-electron
    interaction term to the ground-state energy is calculated for different dimensions,
    and it is found that this ratio approaches one half as N → ∞. For the screened
    case, the effective nuclear charge is computed for different dimensions and its limiting
    value is found to be 3/2 in the infinite-dimensional space. In addition, the
    relative contribution of screening to ground-state energy is calculated in different
    dimensions an
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  • Saturday, July 31, 2010
  • Multidimensional electrostatic energy and classical renormalization
  • Published at:Natural Science (NS), Vol.2, No.7, 760-763 (2010)
  • Recent interest in problems in higher space dimensions
    is becoming increasingly important
    and attracted the attention of many investigators
    in variety of fields in physics. In this paper,
    the electrostatic energy of two geometries (a
    charged spherical shell and a non-conducting
    sphere) is calculated in higher space dimension,
    N. It is shown that as the space dimension increases,
    up to N = 9, the electrostatic energy of
    the two geometries decreases and beyond N = 9
    it increases. Furthermore, we discuss a simple
    example which illustrates classical renormalization
    in electrostatics in higher dimensions.
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  • Saturday, July 31, 2010
  • Recipient of PFDP Teaching Excellence Award 2010
  • On July 26th 2010, Professor Sami Al-Jaber from the Department of Physics at the University has been selected as the recipient of the PFDP Teaching Excellence Award for the year 2010. Professor Al-Jaber was a professor of Theoretical Physics and the Dean of Graduate Studies between 2002-2004 at An-Najah, Dean of the Faculty of Science (2004-2007) and Dean of Scientific Research between 2007-2009. He was also granted An-Najah Research Award in 2007. He obtained a PhD in Theoretical Physics from the Southern Illinois University Carbondale, Illinois, USA in august 1991.
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Sami Mohammad Jaber
Theoretical Physics
Professor, Theoretical Physics, Physics Department, AN-Najah National UniversityNablus, Palestine.
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