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Numerical indication that center vortices drive dynamical mass generation in QCD

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arxiv 2305.18690 v2 pith:5QOMXIVE submitted 2023-05-30 hep-lat hep-phhep-thnucl-th

classification hep-lathep-phhep-thnucl-th
keywords dynamicalcentervorticesmassquarkfieldsgenerationpropagator
verification ladder T0 review T1 audit T2 compute T3 formal

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abstract

The first calculation of the response of the momentum space quark propagator to center vortices in the ground state fields of QCD is presented. Center vortices are identified on 2+1-flavour dynamical gauge fields with $m_\pi \simeq 156$ MeV to obtain the vortex-removed and vortex-only quark propagator. Dynamical mass generation is found to vanish upon vortex removal, while the vortex-only field is able to generate dynamical mass. These new signatures strengthen the lattice QCD evidence indicating that center vortices underpin both dynamical chiral symmetry breaking and quark confinement.

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  1. Generic framework for non-perturbative QCD in light hadrons

    hep-ph 2025-01 conditional novelty 2.0 of 10

    The instanton liquid model, with instanton size, density, and quark mass as its main inputs, is presented as a generic framework for light-hadron vacuum condensates, matrix elements, and form factors.

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