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      Phase diagram of the two-fluid Lipkin model: A "butterfly" catastrophe 

      García Ramos, José Enrique; Pérez Fernández, Pedro; Arias Carrasco, José Miguel; Freire Macías, Emilio (American Physical Society, 2016-03-31)
      Background: In the past few decades quantum phase transitions have been of great interest in nuclear physics. In this ...