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Abelian and non-abelian anomalies in monopole-fermion interactions

Journal Article · · Ann. Phys. (N.Y.); (United States)
Taking an example of the standard SU(5) theory, the monopole-fermion system is reduced to an effective 2-dimensional model. This is a generalized Schwinger model containing four Abelian gauge fields interacting with N generations of massless fermions through vector and axialvector couplings. We quantize such a system exactly in the canonical operator formalism. Then, analyzing the cluster property of operators carrying various chiral charges, the roles of the Abelian and non-Abelian anomalies are studied in monopole-induced baryon decay. We demonstrate that the Abelian anomaly and the charge-mixing boundary condition are the driving forces for monopole-induced baryon decay, though the conservation law suggest the importance of the non-Abelian anomaly.
Research Organization:
Department of Physics, Tohoku University, Sendai 980, Japan
OSTI ID:
5081921
Journal Information:
Ann. Phys. (N.Y.); (United States), Journal Name: Ann. Phys. (N.Y.); (United States) Vol. 171:2; ISSN APNYA
Country of Publication:
United States
Language:
English