Spontaneously Broken Rotational Symmetry in Nuclear Structure: Some New Theoretical Aspects

CHEN Yong-Shou; GAO Zao-Chun

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《中国物理C》（英文）编辑部

2024年10月30日

Chinese Physics C> 2006, Vol. 30> Issue(S2) : 14-19

Spontaneously Broken Rotational Symmetry in Nuclear Structure: Some New Theoretical Aspects

CHEN Yong-Shou ^, ,
GAO Zao-Chun

China Institute of Atomic Energy, Beijing 102413, China2 Institute of Theoretical Physics, CAS, Beijing 100080, China

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Abstract：
The Reflection Asymmetric Shell Model has been generated to include the triaxial degree of freedom. The signature inversion and chiral and wobbling band structures can be described by the present model as results of some nuclei having intrinsic mean fields with spontaneously broken rotational symmetry. As a application of the theory, the triaxial rotation, a fundamental question in nuclear structure, has been investigated by examining the signature inversion and chirality phenomena in nuclei. The signature inversion phenomenon is interpreted as the change of the dynamic cranking axis in triaxially deformed nuclei. An other goal is to provide a new understanding of the nature of the doublet bands in ¹³⁴Pr.

References

[1]

. Hagemann G B et al. Nucl. Phys., 1984, A424: 3652. LIU Y Z et al. Phys. Rev., 1996, C54: 7193. Bengtsson R, Frisk H, May F R et al. Nucl. Phys., 1984,A415: 1894. Ikeda A, Aberg S. Nucl. Phys., 1988, A480: 855. Akitsu Ikeda, Takafumi Shimano. Phys. Rev. Lett., 1989,63: 1396. Hamamoto I, Mottelson B R. Phys. Lett., 1983, B132: 77. Hamamoto I. Phys. Lett., 1990, B232: 2218. Cederwall B et al. Nucl. Phys., 1992, A542: 4549. Tajima N. Nucl. Phys., 1994, A572: 36510. Hara K. Nucl. Phys., 1993, A557: 449c11. XU F R, Satula W, Wyss R. Nucl. Phys., 2000, A669: 11912. GAO Z C, CHEN Y S, SUN Yang. Phys. Lett., 2006, B634: 19513. Frauendorf S, Meng J. Nucl. Phys., 1997, A617: 13114. Dimitrov V I et al. Phys. Rev. Lett., 2000, 84: 573215. Starosta K et al. Nucl. Phys., 2001, A682: 375c16. Petrache C M et al. Nucl. Phys., 1996, A597: 10617. Starosta K et al. Phys. Rev. Lett., 2001, 86: 97118. Tonev D et al. Phys. Rev. Lett., 2006, 96: 05250119. Petrache C M et al. Phys. Rev. Lett., 2006, 96: 11250220. CHEN Y S, GAO Z C. Phys. Rev., 2001, C63: 01431421. Hara K, Sun Y. Int. J. Mod. Phys., 1995, E4: 63722. Bengtsson T, Ragnasson I. Nucl. Phys., 1985, A436: 14

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CHEN Yong-Shou and GAO Zao-Chun. Spontaneously Broken Rotational Symmetry in Nuclear Structure: Some New Theoretical Aspects[J]. Chinese Physics C, 2006, 30(S2): 14-19.

CHEN Yong-Shou and GAO Zao-Chun. Spontaneously Broken Rotational Symmetry in Nuclear Structure: Some New Theoretical Aspects[J]. Chinese Physics C, 2006, 30(S2): 14-19. shu

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Received: 2006-10-13
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Spontaneously Broken Rotational Symmetry in Nuclear Structure: Some New Theoretical Aspects

CHEN Yong-Shou ^,
GAO Zao-Chun

Corresponding author: CHEN Yong-Shou,

China Institute of Atomic Energy, Beijing 102413, China2 Institute of Theoretical Physics, CAS, Beijing 100080, China

Received Date: 2006-10-13
Accepted Date: 1900-01-01
Available Online: 2006-01-03

Abstract: The Reflection Asymmetric Shell Model has been generated to include the triaxial degree of freedom. The signature inversion and chiral and wobbling band structures can be described by the present model as results of some nuclei having intrinsic mean fields with spontaneously broken rotational symmetry. As a application of the theory, the triaxial rotation, a fundamental question in nuclear structure, has been investigated by examining the signature inversion and chirality phenomena in nuclei. The signature inversion phenomenon is interpreted as the change of the dynamic cranking axis in triaxially deformed nuclei. An other goal is to provide a new understanding of the nature of the doublet bands in ¹³⁴Pr.