Abstract
We consider some formal aspects of localized quasi-classical solutions (“bags”) in a field theory involving a “quark” field Ψ and a scalar (“confining”) field Φ, where the latter has a quartic self-coupling and is coupled strongly to the quark field via a Yukawa couplingfΨΨΦ. Renormalization-already coming in at the quasi-classical level through the quark “sea” contribution-and translation invariance are discussed in some detail.
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