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Nucleon-pair approximation with uncoupled representation

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In this paper,we propose an approach to nucleon-pair approximation (NPA) with m-scheme bases,in which the collective nucleon pairs are represented in terms of antisymmetric matrices,and commutations between nucleon pairs are given using a matrix multiplication that avoids angular-momentum couplings and recouplings.Therefore the present approach significantly simplifies the NPA computation.Furthermore,it is formulated on the same footing with and without isospin.

uncoupled representationnucleon-pair approximationformalismcomputational efficiency

Y.Lei、Y.Lu、Y.M.Zhao

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School of National Defense Science and Technology, Southwest University of Science and Technology, Mianyang 621010, China

College of Physics and Engineering, Qufu Normal University, Qufu 273165, China

Shanghai Key Laboratory of Particle Physics and Cosmology, School of Physics and Astronomy,Shanghai Jiao Tong University, Shanghai 200240, China

Collaborative Innovation Center of IFSA (CICIFSA), Shanghai Jiao Tong University, Shanghai 200240, China

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Support by the Sichuan Science and Technology ProgramDoctoral Program of Southwest University of Science and TechnologyNational Natural Science Foundation of ChinaYouth Innovations and Talents Project of Shandong Provincial Colleges,and UniversitiesHigher Educational Youth Innovation Science and Technology Program Shandong ProvinceNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaMOE Key Lab for Particle Physics,Astrophysics and Cosmology for financial support

2019JDRC001718zx7147117051002019091182020KJJ004119751511167510111961141003

2021

10.1088/1674-1137/abe3ed

中国物理C(英文版)
中国物理学会　中国科学院高能物理研究所　中国科学院近代物理研究所

中国物理C(英文版)

CSTPCDCSCDSCI
影响因子：0.347
ISSN：1674-1137
年,卷(期)：2021.45(5)
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