Parent Hamiltonian construction of generalized Calogero-Sutherland models
Phys. Rev. B 114, 115104 – Published 10 August, 2026
DOI: https://doi.org/10.1103/3by3-jsjw
Abstract
The Calogero-Sutherland model (CSM) is a paradigmatic integrable system describing one-dimensional nonrelativistic particles with inverse-square-type interactions. At interaction strength , the CSM exhibits a deep connection to anyon physics, featuring the Laughlin-Jastrow polynomial as its exact ground state. Motivated by this structure, we develop a general reverse-engineering construction of positive semidefinite continuum parent Hamiltonians for trial states admitting a rational conformal field theory description with central charge . By leveraging the null-vector structure of the underlying primary fields and the associated Belavin-Polyakov-Zamolodchikov equations, we derive corresponding many-body annihilation operators. We then apply this construction explicitly to the Moore-Read and Read-Rezayi states—relating to Ising and Fibonacci anyons, respectively—obtaining continuum Hamiltonians for which these Jack-polynomial states, viewed as one-dimensional chiral spin-liquid wave functions, are exact zero modes. We emphasize, however, that our construction does not by itself establish ground-state uniqueness or determine the nature of the excitation spectrum.