• A chiral bag model with a soft surface : structure and solutions of the fuzzy and the modified fuzzy bag model 

      Vasconcellos, Cesar Augusto Zen; Coelho, Hélio Teixeira; Pilotto, Fernando Goncalves; Bodmann, Bardo Ernst Josef; Dillig, Manfred; Razeira, Moises (1998) [Artículo de periódico]
      In the present work we propose a new bag model for hadrons, called the modi ed fuzzy bag model (MFBM). The distinguishing feature of this model is the suppression of the pion eld, as it enters the bag, by means of a scalar ...
    • Nonlocality of the propagation and the effective nucleos spinorbit interaction 

      Dillig, Manfred; Herscovitz, Victoria Elnecave; Teodoro, Maria Ribeiro (1982) [Artículo de periódico]
      The imaginary central and spin-orbit components of the .1.-nucleus optical potential are investigated in a 11'-exchange model. It is found that the effective spin-orbit interaction of the isobar reflects lárge nonlocalities ...