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Generic framework for non-perturbative QCD in light hadrons

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arxiv 2501.07776 v6 pith:OQRCALGP submitted 2025-01-14 hep-ph hep-lathep-thnucl-th

Generic framework for non-perturbative QCD in light hadrons

classification hep-ph hep-lathep-thnucl-th
keywords vacuumframeworkinstantondensityhadronicliquidphysicssystematic
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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In this paper, we review several topological aspects of the QCD vacuum and recent progress on this quantitative unifying framework for the low-lying hadron physics rooted in QCD by introducing the vacuum as a liquid of pseudoparticles. We have developed systematic density expansion on the dilute vacuum to calculate the vacuum expectation values (VEVs) and generalize the calculations to hadronic matrix element and hadronic form factors using the instanton liquid model (ILM). Thereby, the nonperturbative physics can be analyzed in a systematic framework with a few parameters: instanton size $\rho$ and instanton density $n_{I+A}$, and current quark mass $m$.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. All-loop four-quark Bethe-Salpeter kernel

    hep-ph 2026-05 unverdicted novelty 7.0

    The all-loop bare perturbative part of the four-quark Bethe-Salpeter kernel is computed analytically in the large-Nf limit of massless QCD.

  2. Electromagnetic form factors of the nucleon from the instanton vacuum

    hep-ph 2026-05 unverdicted novelty 5.0

    Nucleon EM form factors computed in instanton vacuum model with parameters fixed by saddle-point equation yield proton charge radius 0.841 fm matching muonic hydrogen and good agreement on Q2 dependence of ratios.

  3. The color force acting on a quark in the pion and nucleon

    hep-ph 2025-11 unverdicted novelty 5.0

    In the instanton liquid model, the color force on a struck quark in the pion and nucleon is derived from twist-3 operators, related to gravitational and transversity form factors, and mapped in the transverse plane wi...