Soliton Models of Hadrons
All the various bag models discussed so far work with a sharp boundary radius R that defines a static cavity. It is therefore impossible to describe surface modes of the bag in a consistent, dynamic formulation. This restriction is remedied by the introduction of models in which the meson fields, through their coupling to the quarks, also provide the binding of the quarks. Since these fields themselves obey equations of motion that are coupled to those of the quarks, the surface modes can be described self-consistently. This is absolutely necessary for the description of time-dependent processes such as, e.g., bag—bag collisions.
KeywordsChiral Symmetry Baryon Number Linear Sigma Model Physical Vacuum Chiral Angle
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