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Localized fermions and anomaly inflow via deconstruction

2002; American Physical Society; Volume: 65; Issue: 9 Linguagem: Inglês

10.1103/physrevd.65.095002

1538-4500

Witold Skiba, D. R. Smith,

Quantum Chromodynamics and Particle Interactions

We study fermion localization in gauge theory space. We consider four-dimensional product gauge groups in which light chiral fermions transform under different gauge factors of the product group. This construction provides a suppression of higher dimensional operators. For example, it can be used to suppress dangerous proton decay operators. The anomalies associated with the light chiral fermions are compensated by Wess-Zumino terms, which in the continuum limit reproduce the five-dimensional Chern-Simons term.