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  • Open Access

Strong correlations in the dynamical evolution of lowest Landau level bosons

Y. Yang* and N. R. Cooper

  • T.C.M. Group, Cavendish Laboratory, University of Cambridge, J.J. Thomson Avenue, Cambridge CB3 0US, United Kingdom

  • *Contact author: yy490@cam.ac.uk
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Phys. Rev. Research 8, 033204 – Published 18 August, 2026

DOI: https://doi.org/10.1103/j1zq-ztnv

Abstract

Recent experiments with rotating Bose gases have demonstrated the interaction-driven hydrodynamic instability of an initial extended striplike state in the lowest Landau level. We investigate this phenomenon in the low-density limit, where the mean-field Gross-Pitaevskii theory becomes inadequate, using exact diagonalization studies and analytic arguments. We show that the behavior can be understood in terms of weakly interacting repulsively bound few-body clusters. Signatures of cluster behavior are observed in the expectation values of observables that oscillate at frequencies characterized by the energies of few-body bound states. Using a semiclassical theory for interacting clusters, we predict the long-time growth of the cloud width to be a power law in the logarithm of time. This slow thermalization of bound clusters represents a form of quantum many-body scars.

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Phys. Rev. Research 8, 033204– Published 18 August, 2026
  • Received 18 February 2026
  • Accepted 14 July 2026
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

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