A shell model representation with antibound states

被引:37
作者
Betan, RI [1 ]
Liotta, RJ
Sandulescu, N
Vertse, T
机构
[1] AlbaNova Univ Ctr, Royal Inst Technol, SE-10691 Stockholm, Sweden
[2] Univ Nacl Rosario, FCEIA, Dept Fis, RA-2000 Rosario, Santa Fe, Argentina
[3] Inst Phys & Nucl Engn, Bucharest, Romania
[4] Hungarian Acad Sci, Inst Nucl Res, H-4001 Debrecen, Hungary
基金
匈牙利科学研究基金会;
关键词
D O I
10.1016/j.physletb.2004.01.042
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
An unified shell model scheme is introduced that evaluates simultaneously the contributions of bound single-particle states, Gamow resonances and antibound states to processes occurring in the continuum part of nuclear spectra. This new scheme allows us to study the effect of the antibound pole and the remaining part of the complex continuum separately. The calculations, performed in the complex energy plane, are applied to the study of weakly bound nuclei. The influence of antibound states upon physical quantities in light as well as in heavy nuclei is assessed. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:48 / 57
页数:10
相关论文
共 24 条
[1]   The halo of the exotic nucleus 11Li:: a single Cooper pair [J].
Barranco, F ;
Bortignon, PF ;
Broglia, RA ;
Colò, G ;
Vigezzi, E .
EUROPEAN PHYSICAL JOURNAL A, 2001, 11 (04) :385-392
[2]   RESONANT STATE EXPANSION OF THE RESOLVENT [J].
BERGGREN, T ;
LIND, P .
PHYSICAL REVIEW C, 1993, 47 (02) :768-778
[3]   ON USE OF RESONANT STATES IN EIGENFUNCTION EXPANSIONS OF SCATTERING AND REACTION AMPLITUDES [J].
BERGGREN, T .
NUCLEAR PHYSICS A, 1968, A109 (02) :265-&
[4]   PAIR CORRELATIONS NEAR THE NEUTRON DRIP LINE [J].
BERTSCH, GF ;
ESBENSEN, H .
ANNALS OF PHYSICS, 1991, 209 (02) :327-363
[5]   Shell model in the complex energy plane and two-particle resonances [J].
Betan, RI ;
Liotta, RJ ;
Sandulescu, N ;
Vertse, T .
PHYSICAL REVIEW C, 2003, 67 (01) :143221-1432212
[6]   Two-particle resonant states in a many-body mean field [J].
Betan, RI ;
Liotta, RJ ;
Sandulescu, N ;
Vertse, T .
PHYSICAL REVIEW LETTERS, 2002, 89 (04) :1-042501
[7]   Critical assessment of particle decay as a probe to study the continuum [J].
Bianchini, A ;
Liotta, RJ ;
Sandulescu, N .
PHYSICAL REVIEW C, 2001, 63 (02) :15
[8]  
Bohlen HG, 1997, NUCL PHYS A, V616, pC254
[9]   The continuum structure of the Borromean halo nucleus 11Li [J].
Cobis, A ;
Fedorov, DV ;
Jensen, AS .
PHYSICS LETTERS B, 1998, 424 (1-2) :1-7
[10]   Application of contact interactions to Borromean halos [J].
Esbensen, H ;
Bertsch, GF ;
Hencken, K .
PHYSICAL REVIEW C, 1997, 56 (06) :3054-3062