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arXiv · 2312.01494

Chiral gauge theory at the boundary between topological phases

David B. Kaplan
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Abstract

I demonstrate how chiral fermions with an exact gauge symmetry can appear on the d-dimensional boundary of a finite volume (d+1)-dimensional manifold, without any light mirror partners. The condition for the d-dimensional boundary theory to be local is that gauge anomalies cancel and that the volume be large. This can likely be achieved on a lattice and provides a new paradigm for the lattice regularization of chiral gauge theories.

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David B. Kaplan. 2024-03-13. Chiral gauge theory at the boundary between topological phases. https://arxiv.org/abs/2312.01494

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