Pair-vibrational states in the presence of neutron-proton pairingReport as inadecuate

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1 Physics Division, Argonne National Laboratory 2 GANIL - Grand Accélérateur National d-Ions Lourds

Abstract : Pair vibrations are studied for a Hamiltonian with neutron-neutron, proton-proton and neutron-proton pairing. The spectrum is found to be rich in strongly correlated, low-lying excited states. Changing theratio of diagonal to off-diagonal pairing matrix elements is found to have a large impact on the excited-state spectrum. The variational configuration interaction VCI method, used to calculate the excitation spectrum, is found to be in very good agreement with exact solutions for systems with large degeneracies having equal $T=0$ and $T=1$ pairing strengths.

Keywords : N-P Pairing Excited States Variational Configuration Interaction Method

Author: R.R. Chasman - P. Van Isacker -



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