1998/12/25 by D. Blaschke, Blaschke, D., G. Burau +5
Computer Science · Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Nonlinear Dynamics and Pattern Formation #Quantum chaos and dynamical systems #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/9812503
LaTeX, 12 pages, 3 figures, 1 table
arxiv created 1998/12/25 · openalex publication_date 1998/12/25 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We consider an extended Nambu--Jona-Lasinio (NJL) model for the light meson sector of QCD where unphysical quark production thresholds are excluded by an infrared cut-off on the momentum integration within quark loop diagrams. This chiral quark model conserves the low energy theorems. The infrared cut-off is fixed selfconsistently by the dynamically generated quark mass (quark condensate). The masses and decay widths of the σ- and ρ-mesons are described in the model.