Analytical treatment of the oscillating Yukawa potential |
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Authors: | H. Bahlouli M.S. Abdelmonem S.M. Al-Marzoug |
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Affiliation: | a Physics Department, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia b Saudi Center for Theoretical Physics, Dhahran 31261, Saudi Arabia |
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Abstract: | Using a suitable Laguerre basis set that ensures a tridiagonal matrix representation of the reference Hamiltonian, we were able to evaluate in closed form the matrix elements of the generalized Yukawa potential with a complex screening parameter. This enabled us to treat analytically both the cosine and sine-like Yukawa potentials on equal footing and compute their bound states spectrum as the eigenvalues of the associated analytical matrix representing their Hamiltonians. Finally we used a carefully designed complex scaling method to evaluate the resonance energies and compared our results satisfactorily with those obtained in the literature for the cosine-like Yukawa potential. |
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Keywords: | Bound states Resonances Yukawa potential J-matrix Complex scaling Exponential-cosine-screened Coulomb potential |
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