Fermion Hilbert Space and Fermion Doubling in the Noncommutative Geometry Approach to Gauge Theories

Details Fermion Hilbert Space and Fermion Doubling in the Noncommutative Geometry Approach to Gauge Theories Fermion Hilbert Space and Fermion Doubling in the Noncommutative Geometry Approach to Gauge Theories

1996-10-07

arxiv.org/abs/hep-th/9610035v1

Phys.Rev.D55:6357-6366,1997

Physics

High Energy Physics

High Energy Physics - Theory

plain LaTeX, pp. 17

Scientific paper

10.1103/PhysRevD.55.6357

In this paper we study the structure of the Hilbert space for the recent noncommutative geometry models of gauge theories. We point out the presence of unphysical degrees of freedom similar to the ones appearing in lattice gauge theories (fermion doubling). We investigate the possibility of projecting out these states at the various levels in the construction, but we find that the results of these attempts are either physically unacceptable or geometrically unappealing.

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