{"paper":{"title":"Variational path-integral approach to back-reactions of composite mesons in the Nambu-Jona-Lasinio model","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-th"],"primary_cat":"hep-ph","authors_text":"D. Blaschke, D. Ebert","submitted_at":"2017-03-27T08:07:57Z","abstract_excerpt":"For the investigation of back-reactions of composite mesons in the NJL model, a variational path-integral treatment is formulated which yields an effective action $\\mathscr{A}_{\\rm eff}[D_{\\sigma},D_{\\pi}; S]$, depending on the propagators $D_\\sigma$, $D_\\pi$ of $\\sigma-$ and $\\pi-$mesons and on the full quark propagator $S$. The stationarity conditions $\\delta \\mathscr{A}_{\\rm eff}/ \\delta S = 0$, $\\delta \\mathscr{A}_{\\rm eff}/ \\delta D_\\sigma = 0$, $\\delta \\mathscr{A}_{\\rm eff}/ \\delta D_\\pi = 0$, then lead to coupled Schwinger-Dyson (SD) equations for the quark self-energy and the meson pol"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.08964","kind":"arxiv","version":3},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}