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We study the effect of dynamical gauge field on the Kaplan's chiral fermionon a boundary in the strong gauge coupling limit in the extra dimension. To allorders of the hopping parameter expansion, we prove exact parity invariance ofthe fermion propagator on the boundary. This means that the chiral property ofthe boundary fermion, which seems to survive even in the presence of the gaugefield from a perturbative point of view, is completely destroyed by thedynamics of the gauge field.Comment: 16 pages (including 7 figures), LaTeX, UT-675, KEK-TH-39

THE EFFECT OF DYNAMICAL GAUGE FIELD ON THE CHIRAL FERMION ON A BOUNDARY