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VOLUME 33 (1981) | ISSUE 12 | PAGE 661
Baryon considered as a soliton in loop space
The baryon mass for large N is expressed in QCD in terms of the collective field in loop space, which satisfies the nonlinear functional-integral equation. This collective loop field is a relativistic generalization of the self-consistent Witten field. Our approach confirms Witten's idea that a baryon is a soliton in l/N expansion.