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

Description

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 [1–3] 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 .

Abstract

España, Ministerio de Economía y Competitividad FIS2011-28738-C02-01

Abstract

España, Junta de Andalucía FQM160, P11-FQM-7632 and FQM318

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