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    Parent Hamiltonian construction of generalized Calogero-Sutherland models

    Hari Borutta1,2,*,†, Andreas Feuerpfeil2,3,*,‡, and Yasir Iqbal1,§

    • *These authors contributed equally to this work.
    • †Contact author: haripbj@physics.iitm.ac.in
    • ‡Contact author: andreas.feuerpfeil@uni-wuerzburg.de
    • §Contact author: yiqbal@physics.iitm.ac.in

    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 λ=2, 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 c<1. 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 k=3 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.

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