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Quantum Chromodynamics on Lattice: Direct Minimization of QCD-QED-Action with New Results

Quantum Chromodynamics on Lattice: Direct Minimization of QCD-QED-Action with New Results
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摘要 This paper describes a new numerical QCD calculation method (direct minimization of QCD-QED-action) and its results for the first-generation (u, d) hadrons. Here we start with the standard color-Lagrangian LQCD = LDirac + Lgluon, model the quarks q<sub>i</sub> as parameterized gaussians, and the gluons Ag<sub>i</sub> as Ritz-Galerkin-series. We minimize the Lagrangian numerically with parameters par = (par (q), {α<sub>k</sub>}, par (Ag)) for first-generation hadrons (nucleons, pseudo-scalar mesons, vector mesons). The resulting parameters yield the correct masses and correct magnetic moments for the nucleons, the gluon-distribution and the quark-distribution with interesting insights into the hadron structure. This paper describes a new numerical QCD calculation method (direct minimization of QCD-QED-action) and its results for the first-generation (u, d) hadrons. Here we start with the standard color-Lagrangian LQCD = LDirac + Lgluon, model the quarks q<sub>i</sub> as parameterized gaussians, and the gluons Ag<sub>i</sub> as Ritz-Galerkin-series. We minimize the Lagrangian numerically with parameters par = (par (q), {α<sub>k</sub>}, par (Ag)) for first-generation hadrons (nucleons, pseudo-scalar mesons, vector mesons). The resulting parameters yield the correct masses and correct magnetic moments for the nucleons, the gluon-distribution and the quark-distribution with interesting insights into the hadron structure.
作者 Jan Helm Jan Helm(Department of Electrical Engineering, Technical University Berlin, Berlin, Germany)
出处 《Journal of High Energy Physics, Gravitation and Cosmology》 CAS 2024年第1期228-256,共29页 高能物理(英文)
关键词 QCD QED QCD On-Lattice Color Lagrangian HADRONS QCD QED QCD On-Lattice Color Lagrangian Hadrons
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