Curiosities above c = 24

Understand

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 $\ell<6$ there is a finite number of theories and most of these are classified.
• Recently it has been shown that for $\ell \ge 6$ there are infinitely many admissible characters that could potentially describe CFT's.
• In this note we examine the $\ell=6$ case, whose central charges lie between 24 and 32, and propose a classification method based on cosets of meromorphic CFT's.