H. Rosu, HYBRIDIZING THE SKYRMION WITH AN ANTI-DE-SITTER BAG, Nuovo cimento della Societa italiana di fisica. B, Relativity, classical and statistical physics, 108(3), 1993, pp. 313-329
We discuss a phenomenological model of the nucleon in which a small an
ti-de-Sitter bag is placed into the skyrmion configuration. Such a bag
has a timelike boundary and allows naturally the Cheshire Cat Princip
le. Very important in this model is the membrane of the bag, the 3-dim
ensional manifold S1 x S2, in which topological techniques will come i
nto play.