On the decoupling of mirror fermions

2014/03/18 by Joel Giedt, Chen Chen, Giedt, Joel +3 · 1 citation
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #hep-lat

paper · pdf · doi:10.48550/arxiv.1403.5146

7 pages, 2 figures, Lattice 2013 proceedings (Mainz, Germany)

arxiv created 2014/03/18 · arxiv updated 2014/03/21

Abstract

We study an approach to chiral gauge theories on the lattice that involves decoupling "mirror" fermions from a vector-like theory. We have computed the polarization tensor in the "3-4-5" theory and find a directional discontinuity that appears to be nonzero in the continuum limit. This strongly suggests that the mirror fermions do not decouple.

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