Microscopic analysis of spherical to y-soft shape transitions in Zn isotopes
The rapid transition between spherical and γ-soft shapes in Zn isotopes in the mass A < 70 region, is analyzed using excitation spectra and collective wave functions obtained by diagonalization of a five-dimensional Hamiltonian for quadrupole vibrational and rotational degrees of freedom, with parameters determined by constrained self-consistent relativistic mean-field calculations for triaxial shapes. The microscopic potential energy surfaces, together with the characteristic collective observables, illustrate a rapid transition from near spherical shape at the N = 40 subshell, to y-soft deformed shapes for lighter isotopes. The calculated spectra display fingerprints of a second-order shape phase transition that can be approximately described by the E(5) analytic solution.
quantum phase transitions E(5) critical-point symmetry five-dimensional Hamiltonian
SONG ChunYan LI ZhiPan VRETENAR Dario MENG Jie
School of Physics and Nuclear Energy Engineering, Beihang University, Beijing 100191, China State Ke School of Physical Science and Technology, Southwest University, Chongqing 400715, China State Key L Physics Department, Faculty of Science, University of Zagreb, 10000 Zagreb, Croatia School of Physics and Nuclear Energy Engineering, Beihang University, Beijing 100191, China State Ke
国际会议
北京
英文
222-226
2010-04-27(万方平台首次上网日期,不代表论文的发表时间)