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题名: Alternative characterization of the spherical to axially deformed shape-phase transition in the interacting boson model
作者: Dai, LR ;  Pan, F ;  Liu, L ;  Wang, LX ;  Draayer, JP
刊名: PHYSICAL REVIEW C
出版日期: 2012
卷号: 86, 期号:3, 页码:34316
关键词: COLLECTIVE NUCLEAR-STATES ;  DYNAMICAL-SYMMETRY ;  RACAH COEFFICIENTS ;  LIMIT ;  SU(3) ;  WIGNER ;  U(5) ;  IBM ;  SU3
学科分类: Physics
通讯作者: Dai, LR (reprint author), Liaoning Normal Univ, Dept Phys, Dalian 116029, Peoples R China.
部门归属: [Dai, L. R.; Pan, F.; Liu, L.; Wang, L. X.] Liaoning Normal Univ, Dept Phys, Dalian 116029, Peoples R China; [Dai, L. R.] Chinese Acad Sci, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China; [Pan, F.; Draayer, J. P.] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA
英文摘要: The quantum phase transitional behavior of an alternative characterization of the spherical to axially deformed shape-phase transition in the interacting boson model is explored. Specifically, the usual SU(3) quadrupole-quadrupole interaction is replaced by an O(6) cubic interaction, and the transitional behaviors of the low-lying energy levels, eigenstates, isomer shifts, E2 transition rates, and expectation values of shape variables across the entire transitional region are all examined within this context. A comparison with outcomes of the usual U(5)-SU(3) transitional description shows that the spherical to axially deformed shape-phase transition can also be described within this alternative context, especially near the critical point. However, with the O(6) cubic interaction the transition is considerably smoother than for the U(5)-SU(3) case, but with the nuclear shape less well defined, even in the axially deformed limit. It is also shown that the new scheme seems better than the usual U(5)-SU(3) scheme in describing the low-lying spectrum of Sm-152 with X(5) critical point symmetry.
资助者: US National Science Foundation [OCI-0904874]; Southeastern Universities Research Association; Natural Science Foundation of China [10975068, 11175078]; Doctoral Program Foundation of the State Education Ministry of China [20102136110002]; Chinese Academy of Sciences [KJCX2.YW.W10]; LSU-LNNU [9961]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000308690200001
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15030
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Recommended Citation:
Dai, LR,Pan, F,Liu, L,et al. Alternative characterization of the spherical to axially deformed shape-phase transition in the interacting boson model[J]. PHYSICAL REVIEW C,2012,86(3):34316.
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