Counting monster potentials

We study the large momentum limit of the monster potentials of Bazhanov-Lukyanov-Zamolodchikov, which - according to the ODE/IM correspondence - should correspond to excited states of the Quantum KdV model.We prove that the poles of these potentials asymptotically condensate about the complex equilibria of the ground state potential, and we express the leading correction to such asymptotics in terms of the roots of Wronskians of Hermite polynomials.This allows us to associate to each partition of N a unique monster potential with N roots, of which we compute the spectrum. As a consequence, we prove - up to a few mathematical technicalities - that, fixed an integer N , the number of monster potentials with N roots coincides with the number of integer partitions of N , which is the dimension of the level N subspace of the quantum KdV model. In striking accordance with the ODE/IM correspondence.

Automated summary

The study focuses on the large momentum limit of monster potentials in the context of Quantum KdV model. It is found that the poles of these potentials asymptotically condense around complex equilibria and the leading correction to this behavior is expressed in terms of roots of Wronskians of Hermite polynomials. This study establishes a relationship between the number of monster potentials with N roots and the number of integer partitions of N, in alignment with the ODE/IM correspondence.