critical point symmetry for the spherical to triaxially deformed shape phase transition

تناظر النقطة الحرجة لانتقال الطور الشكلي من الكروي إلى المشوه ثلاثي المحاور

Clicks: 141
ID: 196813
2015
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Abstract
The critical point T(5) symmetry for the spherical to triaxially deformed shape phase transition is introduced from the Bohr Hamiltonian by approximately separating variables at a given γ deformation with 0°≤γ≤30°. The resulting spectral and E2 properties have been investigated in detail. The results indicate that the original X(5) and Z(5) critical point symmetries can be naturally realized within the T(5) model in the γ=0° and γ=30° limit, respectively, which thus provides a dynamical connection between the two symmetries. Comparison of the theoretical calculations for 148Ce, 160Yb, 192Pt and 194Pt with the corresponding experimental data is also made, which indicates that, to some extent, possible asymmetric deformation may be involved in these transitional nuclei.
يُقدَّم تماثل النقطة الحرجة T(5) لانتقال الطور الشكلي من الهيكل الكروي إلى المشوَّه ثلاثي المحاور انطلاقاً من هاميلتونيان بور، وذلك من خلال فصل المتغيرات تقريبياً عند تشوّه $\gamma$ محدّد بحيث تكون $0^\circ \le \gamma \le 30^\circ$. وقد دُرست الخصائص الطيفية وخصائص E2 الناتجة بالتفصيل. وتُشير النتائج إلى إمكانية تحقيق تماثلي النقطة الحرجة الأصليين X(5) وZ(5) بصورة طبيعية ضمن نموذج T(5) عند الحدين $\gamma=0^\circ$ و$\gamma=30^\circ$ على التوالي، مما يوفّر بالتالي صلة ديناميكية بين التماثلين. كما أُجريت مقارنة بين الحسابات النظرية لنوى 148Ce و160Yb و192Pt و194Pt والبيانات التجريبية المقابلة، وهو ما يشير إلى أن تشوّهاً محتملاً غير متناظر قد يكون مساهماً، إلى حدٍ ما، في هذه النوى الانتقالية.
Reference Key
zhang2015physicscritical Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Yu Zhang, Feng Pan, Yan-An Luo, J.P. Draayer
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Journal ACS chemical biology
Year 2015
DOI
10.1016/j.physletb.2015.10.082
URL
http://www.sciencedirect.com/science/article/pii/S0370269315008412
Keywords
physics

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