An effective Coulomb interaction in nuclear energy density functionals

doi:10.1016/j.nuclphysa.2019.01.003

	An effective Coulomb interaction in nuclear energy density functionals
	Dong, J. M.1; Shang, X. L.1; Zuo, W.1,2 ; Niu, Y. F.3; Sun, Y.1,4,5
刊名	NUCLEAR PHYSICS A
	2019-03-01
卷号	983 页码:133-144
关键词	Coulomb interaction Nuclear energy density functionals Charge-symmetry breaking Brueckner theory
ISSN号	0375-9474
DOI	10.1016/j.nuclphysa.2019.01.003
英文摘要	It is well-known that the charge-violating interaction is usually underestimated in nuclear many-body approaches. In the framework of the Skyrme-Hartree-Fock (SHF) method, the effective two-body charge-symmetry breaking (CSB) and charge-independent breaking (CIB) interactions in nuclear medium based on Brueckner theory are included, then we constrain the effective Coulomb interaction in turn with the help of experimental Coulomb displacement energy (CDE), i.e., the binding-energy difference between mirror nuclei. Accordingly, we introduce a new (effective) Coulomb coupling constant e(0)(2) = e(2) (1 + a(exc)Z(-2/3)) to replace the original one e(2) between protons (note that the original coupling constant just applies to point-like charge), where Z is proton number. This effective coupling constant e(0)(2) is phenomenologically embodying the effects of many complicated corrections beyond mean-field method or even nuclear structure physics such as core polarization, nucleon finite size and vacuum polarization. With e(0)(2)=e(2)(1 + 0.45Z(-2/3)) for SLy4 interaction, the experimental CDE for T = 1/2, 1, 3/2, 2 isobaric multiplets, together with the excitation energy of isobaric analog states for heavy nuclei such as Pb-208, can be rather well reproduced, indicating the validity of such a treatment. Moreover, the c coefficients in the isobaric multiplet mass equation for isobaric quartets are computed, and the results based on Coulomb force turns out to be around 10%-15% lower than the experimental ones persistently, just as the Nolen-Schiffer anomaly. Yet, the introduction of both the CIB effect and the e(0)(2) systematically improves the agreement with experimental data substantially. (C) 2019 Published by Elsevier B.V.
资助项目	K.C. Wong Education Foundation ; Extreme Light Infrastructure Nuclear Physics (ELI-NP) Phase II ; Romanian Government ; European Union through European Regional Development Fund the Competitiveness Operational Programme[1/07.07.2016] ; European Union through European Regional Development Fund the Competitiveness Operational Programme[1334] ; National Natural Science Foundation of China[11775276] ; National Natural Science Foundation of China[11435014] ; National Natural Science Foundation of China[11505241] ; National Natural Science Foundation of China[11675265] ; National Natural Science Foundation of China[11575112] ; 973 Program of China[2013CB834401] ; 973 Program of China[2013CB834405] ; National Key Programme for S&T Research and Development[2016YFA0400501] ; National Key Programme for S&T Research and Development[2016YFA0400502] ; Funds for Creative Research Groups of China[11321064] ; Youth Innovation Promotion Association of Chinese Academy of Sciences
WOS关键词	FOCK-BOGOLYUBOV EQUATIONS ; SKYRME INTERACTION ; CORE POLARIZATION ; SYMMETRY BREAKING ; MASS DIFFERENCE ; STATES ; PARAMETRIZATION ; RESONANCES ; STRENGTH
WOS研究方向	Physics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000459527900010
资助机构	K.C. Wong Education Foundation ; Extreme Light Infrastructure Nuclear Physics (ELI-NP) Phase II ; Romanian Government ; European Union through European Regional Development Fund the Competitiveness Operational Programme ; National Natural Science Foundation of China ; 973 Program of China ; National Key Programme for S&T Research and Development ; Funds for Creative Research Groups of China ; Youth Innovation Promotion Association of Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/64830]
专题	中国科学院近代物理研究所
作者单位	1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China 2.Univ Chinese Acad Sci, Sch Phys, Beijing 100049, Peoples R China 3.Horia Hulubei Natl Inst Phys & Nucl Engn, ELI NP, 30 Reactorului St, RO-077125 Bucharest, Romania 4.Shanghai Jiao Tong Univ, Sch Phys & Astron, Shanghai 200240, Peoples R China 5.Shanghai Jiao Tong Univ, Collaborat Innovat Ctr IFSA, Shanghai 200240, Peoples R China
推荐引用方式 GB/T 7714	Dong, J. M.,Shang, X. L.,Zuo, W.,et al. An effective Coulomb interaction in nuclear energy density functionals[J]. NUCLEAR PHYSICS A,2019,983:133-144.
APA	Dong, J. M.,Shang, X. L.,Zuo, W.,Niu, Y. F.,&Sun, Y..(2019).An effective Coulomb interaction in nuclear energy density functionals.NUCLEAR PHYSICS A,983,133-144.
MLA	Dong, J. M.,et al."An effective Coulomb interaction in nuclear energy density functionals".NUCLEAR PHYSICS A 983(2019):133-144.