Impurity effect of Lambda hyperon on collective excitations of nuclear core in Mg-25(Lambda)
文献类型：期刊论文
| 作者 | Yao, J. M.1; Li, Z. P.1; Hagino, K.2; Win, M. Thi2; Zhang, Y.3,4; Meng, J.3,4,5,6 |
| 刊名 | NUCLEAR PHYSICS A
 |
| 出版日期 | 2011-10-15 |
| 卷号 | 868-69页码:12-24 |
| ISSN号 | 0375-9474 |
| 关键词 | Hypernuclei Impurity effect of Lambda hyperon Collective Hamiltonian E2 transition strengths |
| DOI | 10.1016/j.nuclphysa.2011.08.006 |
| 英文摘要 | Taking the ground state rotational band in Mg-24 as an example, we investigate the impurity effect of Lambda hyperon on collective excitations of atomic nuclei in the framework of non-relativistic energy density functional theory. To this end, we take into account correlations related to the restoration of broken symmetries and fluctuations of collective variables by solving the eigenvalue problem of a five-dimensional collective Hamiltonian for quadrupole vibrational and rotational degrees of freedom. The parameters of the collective Hamiltonian are determined with constrained mean-field calculations for triaxial shapes using the SGII Skyrme force. We compare the low-spin spectrum for Mg-24 with the spectrum for the same nucleus inside Mg-25(Lambda). It is found that the Lambda hyperon stretches the ground state band and reduces the B(E2 : 2(1)(+) -> 0(1)(+)) value by similar to 9%, mainly by softening the potential energy surface towards the spherical shape, even though the shrinkage effect on the average proton radius is only similar to 0.5%. (C) 2011 Elsevier B.V. All rights reserved. |
| WOS关键词 | MEAN-FIELD THEORY ; FEW-BODY SYSTEMS ; HYPERNUCLEI ; MODEL ; SPECTROSCOPY ; DYNAMICS ; EQUATION ; STRANGE ; SIGMA |
| 资助项目 | Tohoku University ; Major State 973 Program[2007CB815000] ; National Natural Science Foundation of China[11105111] ; National Natural Science Foundation of China[10947013] ; National Natural Science Foundation of China[10975008] ; National Natural Science Foundation of China[11105110] ; Fundamental Research Funds for the Central Universities[XDJK2010B007] ; Southwest University Initial Research Foundation[SWU109011] ; Southwest University Initial Research Foundation[SWU110039] ; Japanese Ministry of Education, Culture, Sports, Science and Technology[22540262] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE BV |
| WOS记录号 | WOS:000296039800002 |
| 资助机构 | Tohoku University ; Major State 973 Program ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Southwest University Initial Research Foundation ; Japanese Ministry of Education, Culture, Sports, Science and Technology |
| 源URL | [http://119.78.100.186/handle/113462/34866]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Yao, J. M. |
| 作者单位 | 1.Southwest Univ, Sch Phys Sci & Technol, Chongqing 400715, Peoples R China 2.Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan 3.Peking Univ, Sch Phys, Beijing 100871, Peoples R China 4.Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China 5.Beihang Univ, Sch Phys & Nucl Energy, Beijing 100083, Peoples R China 6.Ctr Theoret Nucl Phys, Natl Lab Heavy Ion Accelerator, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yao, J. M.,Li, Z. P.,Hagino, K.,et al. Impurity effect of Lambda hyperon on collective excitations of nuclear core in Mg-25(Lambda)[J]. NUCLEAR PHYSICS A,2011,868-69:12-24. |
| APA | Yao, J. M.,Li, Z. P.,Hagino, K.,Win, M. Thi,Zhang, Y.,&Meng, J..(2011).Impurity effect of Lambda hyperon on collective excitations of nuclear core in Mg-25(Lambda).NUCLEAR PHYSICS A,868-69,12-24. |
| MLA | Yao, J. M.,et al."Impurity effect of Lambda hyperon on collective excitations of nuclear core in Mg-25(Lambda)".NUCLEAR PHYSICS A 868-69(2011):12-24. |
入库方式： OAI收割
来源：近代物理研究所
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