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Physical Review Letters 76 (1996) 3514-3517
Supersymmetric Multiphonon Structure
Ka-Hae Kim, Takaharu Otsuka, A. Gelberg, P. von Brentano, P. Van Isacker1
(1996)

A multiphonon structure, which is known to exist in boson systems [e.g., the U(5) and O(6) limits of the interacting boson model], is shown to arise also in a mixed system of bosons and fermions. This is illustrated with the example of the Spin(6) limit of U( 6|4) in which a j = 3 / 2 fermion is coupled to an O(6) boson core. All states in the supersymmetric multiplet of U( 6|4) are shown to be multiphonon states obtained by multiple action of a quadrupole operator.
1 :  GANIL - Grand Accélérateur National d'Ions Lourds
Physique/Physique Nucléaire Théorique