A quartet of fermionic expressions for $M(k,2k\pm 1)$ Virasoro characters via half-lattice paths

Olivier Blondeau-Fournier, Pierre Mathieu, Trevor A Welsh

We derive new fermionic expressions for the characters of the Virasoro minimal models $M(k,2k\pm 1)$ by analysing the recently introduced half-lattice paths. These fermionic express…