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A simpler way to gauge quantum field theories in two dimensions

Dmitri Bykov, Ulf Lindström, Martin Roček

May 18, 2026

In 2D quantum field theories with specific symmetries, you need the right multiplet to gauge isometries. This work shows a newly proposed multiplet is actually a constrained variant of the Large Vector Multiplet, and using it produces a system where a βγ system couples to a sigma model—connecting what looked like separate structures.
Published as The Large Vector Multiplet and Gauging $(2,2)$ $σ$-models arXiv:2605.18536
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