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  • Open Access

Influence of center vortices on the overlap quark propagator in dynamical QCD

Adam Virgili, Waseem Kamleh, and Derek B. Leinweber

  • Special Research Centre for the Subatomic Structure of Matter (CSSM), Department of Physics, University of Adelaide, South Australia 5005, Australia

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Phys. Rev. D 111, 094518 – Published 29 May, 2025

DOI: https://doi.org/10.1103/pvfs-91ks

Abstract

There is strong evidence supporting center vortices as underpinning confinement and dynamical chiral symmetry breaking—the two key features of nonperturbative QCD. In our recent paper [1] we find that dynamical mass generation vanishes upon vortex removal in full QCD with a near-physical quark mass. In this work we extend those results and consider the influence of center vortex removal on the overlap Landau-gauge quark propagator at multiple valence quark masses on the same dynamical QCD ensemble, keeping fixed the near-physical sea quark mass. After carefully applying a smoothing process we also find that dynamical mass generation is reproduced on the corresponding vortex-only fields. This vortex-only dynamical mass shows qualitative agreement with the untouched Monte Carlo gauge field results. The results reported herein lend further credence to the important relationship between dynamical fermions and center vortices and the mediation of nonperturbative phenomena in QCD.

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Phys. Rev. D 111, 094518– Published 29 May, 2025
  • Received 27 November 2024
  • Accepted 12 May 2025
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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. Funded by SCOAP3.

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