Coexistence and fluctuations phenomena with Davidson-like potentials in quadrupoleoctupole deformed nuclei

作     者：M M Hammad W H Mansour E M El-Maghraby H A Motaweh Ayman A Aly M M Hammad;W H Mansour;E M El-Maghraby;H A Motaweh;Ayman A Aly

作者机构：Faculty of ScienceMathematics DepartmentDamanhour UniversityEgypt Faculty of SciencePhysics DepartmentDamanhour UniversityEgypt 

出 版 物：《Communications in Theoretical Physics》 (理论物理通讯（英文版）)

年 卷 期：2021年第73卷第3期

页      面：105-118页

核心收录：

学科分类：08[工学] 0827[工学-核科学与技术] 082701[工学-核能科学与工程] 

主　　题：quantum phase transitions fluctuations phenomena coherent quadrupole-octupole motion model coexistence phenomena 

摘      要：The energy spectra of three types of two-dimensional potentials(we will call them‘Davidson-like potentials’(DLPs)),characterized by four minima separated by barriers,are *** predictions for spectra and wave functions are obtained by using the nine-point finite-difference *** these potentials,with the existence of a single configuration,a transition of spectra,as a function of barrier height,is covered from tunneling splitting modes to fluctuations phenomena,with equal peaks wave functions,crossing to the spectra of purely anharmonic oscillator potentials(AOPs).A different type of phase transition occurs when two(or more)configurations *** the change of the parameters,a transition of spectra is covered from coexistence phenomena of two distinct quantum tunneling modes to fluctuations phenomena,with unequal peaks wave functions,crossing to the spectra of purely *** DLPs,a particular application of the coherent quadropole-octupole model to describe energy bands with alternating parity of the nuclei^(100)Mo,^(146,148)Nd,^(148,150)Sm,^(220)Ra,^(220,222)Rn,and^(220,222)Th is *** global parametrization of the model for the selected nuclei is achieved.