Spectra and Symmetry in Nuclear Pairing
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We apply the algebraic Bethe ansatz technique to the nuclear pairing problem with orbit dependent coupling constants and degenerate single particle energy levels. We find the exact energies and eigenstates. We show that for a given shell, there are degeneracies between the states corresponding to less and more than half full shell. We also provide a technique to solve the equations of Bethe ansatz.
15 pages of REVTEX with 2 eps figures
15 pages of REVTEX with 2 eps figures