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Elsevier, Physics Letters B, (736), p. 333-338, 2014

DOI: 10.1016/j.physletb.2014.07.038

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Disentangling phase transitions and critical points in the proton-neutron interacting boson model by catastrophe theory

Journal article published in 2014 by J. E. Garcia-Ramos ORCID, J. M. Arias, J. Dukelsky ORCID
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

We introduce the basic concepts of catastrophe theory needed to derive analytically the phase diagram of the proton-neutron interacting boson model (IBM-2). Previous studies [1,2,3] were based on numerical solutions. We here explain the whole IBM-2 phase diagram including the precise order of the phase transitions in terms of the cusp catastrophe. ; Comment: To be published in Physics Letters B