English

Curiosities above c = 24

High Energy Physics - Theory 2019-07-24 v4 Mathematical Physics math.MP Number Theory

Abstract

Two-dimensional rational CFT are characterised by an integer \ell, related to the number of zeroes of the Wronskian of the characters. For two-character RCFT's with <6\ell<6 there is a finite number of theories and most of these are classified. Recently it has been shown that for 6\ell \ge 6 there are infinitely many admissible characters that could potentially describe CFT's. In this note we examine the =6\ell=6 case, whose central charges lie between 24 and 32, and propose a classification method based on cosets of meromorphic CFT's. We illustrate the method using theories on Kervaire lattices with complete root systems. In the process we construct the first known two-character RCFT's beyond =2\ell=2.

Cite

@article{arxiv.1812.05109,
  title  = {Curiosities above c = 24},
  author = {A. Ramesh Chandra and Sunil Mukhi},
  journal= {arXiv preprint arXiv:1812.05109},
  year   = {2019}
}

Comments

20 pages, v4: Corrected some entries in Tables A.1 to A.5 in Appendix A

R2 v1 2026-06-23T06:40:35.307Z