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• W3098693335 abstract "Background: Zr region is characterized by very rapid changes in the ground-state structure of the nuclei. In particular, the onset of deformation when passing from $^{98}mathrm{Zr}$ to $^{100}mathrm{Zr}$ is one of the fastest ever observed in the nuclear chart. It has been probed both experimentally and theoretically that certain low-lying excited states of Zr isotopes own different shapes than the ground state.Purpose: We intend to disentangle the interplay between the sudden changes in the ground-state shape, i.e., the existence of a quantum phase transition, and the presence in the spectra of coexisting states with very different deformation, i.e., the presence of shape coexistence.Method: We rely on a previous calculation using the interacting boson model with configuration mixing (IBM-CM), which reproduces in detail the spectroscopic properties of $^{96ensuremath{-}110}mathrm{Zr}$. This IBM-CM calculation allows to compute mean-field energy surfaces, wave functions, and any other observable related with the presence of shape coexistence or with a quantum phase transition.Results: We obtain energy surfaces and the equilibrium value of the deformation parameter $ensuremath{beta}$, the U(5) decomposition of the wave functions, and the density of states.Conclusions: We confirm that Zr is a clear example of quantum phase transition that originates from the crossing of two configurations with a very different degree of deformation. Moreover, we observe how the intruder configuration exhibits its own evolution, which resembles a quantum phase transition too." @default.
• W3098693335 created "2020-11-23" @default.
• W3098693335 creator A5026882973 @default.
• W3098693335 creator A5067695933 @default.
• W3098693335 date "2020-11-30" @default.
• W3098693335 modified "2023-10-13" @default.
• W3098693335 title "Subtle connection between shape coexistence and quantum phase transition: The Zr case" @default.
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• W3098693335 doi "https://doi.org/10.1103/physrevc.102.054333" @default.
• W3098693335 hasPublicationYear "2020" @default.
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