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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

On Classification of Fermionic Rational Conformal Field Theories

classification hep-th cond-mat.str-el
keywords conformalcharactersfermionicfieldrationaltheoriesclassificationintegrality
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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 2 Pith papers

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