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

E. Moya de Guerra; A. A. Raduta; Larry Zamick; P. Sarriguren

doi:10.1016/j.nuclphysa.2003.07.009

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

E. Moya de Guerra, A. A. Raduta, Larry Zamick, P. Sarriguren

New High Energy Theory Center

Research output: Contribution to journal › Article › peer-review

22 Scopus citations

Abstract

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.

Original language	English (US)
Pages (from-to)	3-23
Number of pages	21
Journal	Nuclear Physics A
Volume	727
Issue number	1-2
DOIs	https://doi.org/10.1016/j.nuclphysa.2003.07.009
State	Published - Nov 3 2003

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

Keywords

Gamow-Teller and Fermi strengths
Proton-neutron pairing
Sum rules

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10.1016/j.nuclphysa.2003.07.009

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

abstract = "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.",

keywords = "Gamow-Teller and Fermi strengths, Proton-neutron pairing, Sum rules",

author = "{Moya de Guerra}, E. and Raduta, {A. A.} and Larry Zamick and P. Sarriguren",

note = "Funding Information: This work was partially supported by MCyT (Spain) under contract numbers PB98-0676 and BFM2002-03562, by a US Department of Energy Grant No. DE-FG02-95ER-40940 and by a NATO Linkage Grant PST 978158.",

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AU - Moya de Guerra, E.

AU - Raduta, A. A.

AU - Zamick, Larry

AU - Sarriguren, P.

N1 - Funding Information: This work was partially supported by MCyT (Spain) under contract numbers PB98-0676 and BFM2002-03562, by a US Department of Energy Grant No. DE-FG02-95ER-40940 and by a NATO Linkage Grant PST 978158.

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N2 - 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.

AB - 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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KW - Proton-neutron pairing

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