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Classification of Unitary RCFTs with Two Primaries and Central Charge Less Than 25
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abstract
We classify all two-dimensional, unitary, rational conformal field theories with two primaries, central charge $c<25$, and arbitrary Wronskian index. In mathematical parlance, we classify all strongly regular vertex operator algebras (VOAs) with central charge $c<25$ and exactly two simple modules. We find that any such theory is either one of the Mathur-Mukhi-Sen (MMS) theories $\mathsf{A}_{1,1}$, $\mathsf{G}_{2,1}$, $\mathsf{F}_{4,1}$, or $\mathsf{E}_{7,1}$, or it is a coset of a chiral algebra with one primary operator (also known as a holomorphic VOA) by such an MMS theory. By leveraging existing results on the classification of holomorphic VOAs, we are able to explicitly enumerate all of the aforementioned cosets and compute their characters. This leads to 123 theories, most of which are new. We emphasize that our work is a bona fide classification of RCFTs, not just of characters. Our techniques are general, and we argue that they offer a promising strategy for classifying chiral algebras with low central charge beyond two primaries.
Forward citations
Cited by 4 Pith papers
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Irrational CFTs from coupled anyon chains with non-invertible symmetries?
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R\'enyi entropy of single-character CFTs on the torus
A Wronskian-based method gives explicit torus conformal blocks for the Z2 orbifold of E8,1, yielding a two-periodic twist two-point function and the second Rényi entropy with universal logarithmic divergence plus UV-f...
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