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Criticality in the configuration-mixed Interacting Boson Model:\\ (2) $\hat{Q}(\chi_1)\hat{Q}(\chi_1)$-$\hat{Q}(\chi_2)\hat{Q}(\chi_2)$ mixing

Abstract : The case of $\hat{Q}(\chi_1)\cdot\hat{Q}(\chi_1)$-$\hat{Q}(\chi_2)\cdot\hat{Q}(\chi_2)$ mixing in the interacting boson model is studied within its mean-field approximation. It is shown that the criticality conditions lead to two classes of solutions and that $\chi_1$ and $\chi_2$ need to have an opposite sign to make prolate-oblate shape coexistence possible. Phase diagrams for selected cases have been constructed.
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Contributor : Michel Lion <>
Submitted on : Monday, December 1, 2008 - 10:13:14 AM
Last modification on : Thursday, February 1, 2018 - 1:34:58 AM
Long-term archiving on: : Monday, June 7, 2010 - 10:10:22 PM

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V. Hellemans, P. van Isacker, S. de Baerdemacker, K. Heyde. Criticality in the configuration-mixed Interacting Boson Model:\\ (2) $\hat{Q}(\chi_1)\hat{Q}(\chi_1)$-$\hat{Q}(\chi_2)\hat{Q}(\chi_2)$ mixing. Nuclear Physics A, Elsevier, 2009, 819, pp.11-26. ⟨10.1016/j.nuclphysa.2009.01.002⟩. ⟨in2p3-00343245⟩

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