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On Classification of Fermionic Rational Conformal Field Theories

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arxiv 2210.06805 v2 pith:BT7XWR76 submitted 2022-10-13 hep-th cond-mat.str-el

classification hep-thcond-mat.str-el
keywords conformalcharactersfermionicfieldrationaltheoriesclassificationintegrality
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abstract

We systematically study how the integrality of the conformal characters shapes the space of fermionic rational conformal field theories in two dimensions. The integrality suggests that conformal characters on torus with a given choice of spin structures should be invariant under a principal congruence subgroup of $\mathrm{PSL}(2,\mathbb{Z})$. The invariance strongly constrains the possible values of the central charge as well as the conformal weights in both Neveu-Schwarz and Ramond sectors, which improves the conventional holomorphic modular bootstrap method in a significant manner. This allows us to make much progress on the classification of fermionic rational conformal field theories with the number of independent characters less than five.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Non-unitary Haagerup-like TQFTs and RCFTs from generalized S-fold SCFTs

    hep-th 2026-08 conditional novelty 6.0 of 10

    The authors propose modular S and T matrices and boundary RCFT characters for non-unitary TQFTs from generalized S-fold SCFTs, matching Haagerup-Izumi data for special parameter values.

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    hep-th 2026-07 conditional novelty 6.0 of 10

    A differential operator Θ = η^{-4}D relates MLDE solutions across Wronskian sectors, reducing higher-ℓ quasi-character classification in ranks 2 and 3 to ℓ=0 data and proving the ℓ=2 sign conjecture.

  3. Modularity, 4d mirror symmetry, and VOA modules of 4d $\mathcal{N} = 2$ SCFTs with $a = c$

    hep-th 2025-05 conditional novelty 6.0 of 10

    The vacuum Schur-index modular orbit is proposed as the full VOA module-character space for several a=c theories, with a conjectured dimension formula 1+3ℓ(2+ℓ) for the T_{2,2ℓ+1} series.

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