García Ramos, José EnriqueArias Carrasco, José MiguelDukelsky, Jorge2017-05-242017-05-242014García Ramos, J.E., Arias Carrasco, J.M. y Dukelsky, J. (2014). Disentangling phase transitions and critical points in the proton-neutron interacting boson model by catastrophe theory. Physics letters B, 736, 333-338.0370-2693http://hdl.handle.net/11441/60418We 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 .application/pdfengAttribution-NonCommercial-NoDerivatives 4.0 Internacionalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccesshttps://doi.org/10.1016/j.physletb.2014.07.038