Regularization in the J-matrix method of scattering revisited |
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Authors: | A.D. Alhaidari H. Bahlouli M.S. Abdelmonem F. Al-Ameen T. Al-Abdulaal |
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Affiliation: | 1. Shura Council, Riyadh 11212, Saudi Arabia;2. Physics Department, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia;3. Girls College of Sciences, Dammam 31113, Saudi Arabia |
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Abstract: | We present an alternative, but equivalent, approach to the regularization of the reference problem in the J-matrix method of scattering. After identifying the regular solution of the reference wave equation with the “sine-like” solution in the J-matrix approach we proceed by direct integration to find the expansion coefficients in an L2 basis set that ensures a tridiagonal representation of the reference Hamiltonian. A differential equation in the energy is then deduced for these coefficients. The second independent solution of this equation, called the “cosine-like” solution, is derived by requiring it to pertain to the L2 space. These requirements lead to solutions that are exactly identical to those obtained in the classical J-matrix approach. We find the present approach to be more direct and transparent than the classical differential approach of the J-matrix method. |
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Keywords: | 03.65.Fd 03.65.Nk 03.65.Ca |
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