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arXiv · 2411.13646

CFTs with Large Gap from Barnes-Wall Lattice Orbifolds

Christoph A. Keller·Ashley Winter Roberts·Jeremy Roberts
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Abstract

We investigate orbifolds of lattice conformal field theories with the goal of constructing theories with large gap. We consider Barnes-Wall lattices, which are a family of lattices with no short vectors, and orbifold by an extraspecial 2-group of lattice automorphisms. To construct the orbifold CFT, we investigate the orbifold vertex operator algebra and its twisted modules. To obtain a holomorphic CFT, a certain anomaly 3-cocycle $\omega$ needs to vanish; based on evidence we provide, we conjecture that it indeed does. Granting this conjecture, we construct a holomorphic CFT of central charge 128 with gap 4.

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Christoph A. Keller, Ashley Winter Roberts, Jeremy Roberts. 2024-11-20. CFTs with Large Gap from Barnes-Wall Lattice Orbifolds. https://arxiv.org/abs/2411.13646

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