A note on BKP for the Kontsevich matrix model with arbitrary potential

Borot, Gaëtan; Wulkenhaar, Raimar

Abstract

We exhibit the Kontsevich matrix model with arbitrary potential as a BKP tau-function with respect to polynomial deformations of the potential. The result can be equivalently formulated in terms of Cartan-Plücker relations of certain averages of Schur Q-function. The extension of a Pfaffian integration identity of de Bruijn to singular kernels is instrumental in the derivation of the result.