T=0 versus T=1 pairing in the interacting boson model

International audienceA connection is established between an interacting boson model (IBM) that includes T=1 bosons (IBM-3) and one that includes T=0 as well as T=1 bosons (IBM-4). The connection relies on an IBM-4 classification that breaks Wigner's SU(4) symmetry. The resulting generalized IBM-4 is relevant for studying the competition between T=0 and T=1 pairing in N∼Z nuclei. Consequences for the pair structure in self-conjugate nuclei are discussed