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Constant chromomagnetic field in the soliton bag model.

In the Friedberg-Lee soliton bag model, a potential function may be found such that the chromomagnetic field generated by each quark is constant. The coupled field equations of the soliton bag model then reduce to a single second-order differential equation depending on only one parameter. The values obtained for static baryonic observables, for the effective strong fine-structure constant, and for the scalar-glueball mass agree well with present knowledge.