Monopole-Catalysed Baryon Decay: A Boundary Conformal Field Theory Approach

Abstract

Monopole-mediated baryon number violation, the Callan-Rubakov effect, is reexamined using boundary conformal field theory techniques. It is shown that the low-energy behaviour is described simply by free fermions with a conformally invariant boundary condition at the dyon location. When the number of fermion flavours is greater than two, this boundary condition is of a non-trivial type which has not been elucidated previously.

27 pages, RevTex, UBCTP-93-18

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