Charge exchange operators sum rules and proton-neutron T=0 and T=1 pairing interactions

Details Charge exchange operators sum rules and proton-neutron T=0 and T=1 pairing interactions Charge exchange operators sum rules and proton-neutron T=0 and T=1 pairing interactions

2003-04-08

arxiv.org/abs/nucl-th/0304024v2

Nucl.Phys. A727 (2003) 3-23

Physics

Nuclear Physics

Nuclear Theory

17 pages, new section added. To appear in Nucl. Phys. A

Scientific paper

10.1016/j.nuclphysa.2003.07.009

We study sum rules for charge exchange operators of the Gamow-Teller and Fermi type and explore what can be learned from them about proton-neutron pairing in T=0 and T=1 channels. We consider both energy weighted (EWSR) and non-energy weighted (NEWSR) sum rules. We use a schematic Hamiltonian to stress the distinctive roles of T=1 and T=0 pair interactions and correlations in the sum rules. Numerical results for 44Ti are presented for both schematic and realistic interactions.

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