Investigation of the Domain Wall Fermion Approach to Chiral Gauge Theories on the Lattice

Details Investigation of the Domain Wall Fermion Approach to Chiral Gauge Theories on the Lattice Investigation of the Domain Wall Fermion Approach to Chiral Gauge Theories on the Lattice

1993-09-23

arxiv.org/abs/hep-lat/9309015v1

Phys.Rev. D49 (1994) 1606-1620

Physics

High Energy Physics

High Energy Physics - Lattice

27p. Latex; UCSD/PTH 93-28, Wash. U. HEP/93-60

Scientific paper

10.1103/PhysRevD.49.1606

We investigate a recent proposal to construct chiral gauge theories on the lattice using domain wall fermions. We restrict ourselves to the finite volume case, in which two domain walls are present, with modes of opposite chirality on each of them. We couple the chiral fermions on only one of the domain walls to a gauge field. In order to preserve gauge invariance, we have to add a scalar field, which gives rise to additional light mirror fermion and scalar modes. We argue that in an anomaly free model these extra modes would decouple if our model possesses a so-called strong coupling symmetric phase. However, our numerical results indicate that such a phase most probably does not exist. ---- Note: 9 Postscript figures are appended as uuencoded compressed tar file.

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