{"paper":{"title":"Chiral Symmetry Restoration at Finite Temperature in the Linear Sigma--Model","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"D. Metzger, H.--J. Pirner, H. Meyer--Ortmanns","submitted_at":"1993-12-09T13:49:15Z","abstract_excerpt":"The temperature behaviour of meson condensates $<\\sigma_0>$ and $<\\sigma_8>$ is calculated in the $SU(3)\\times SU(3)$-linear sigma model. The couplings of the Lagrangian are fitted to the physical $\\pi,K,\\eta,\\eta'$ masses, the pion decay constant and a $O^+(I=0)$ scalar mass of $m_\\sigma=1.5$ GeV. The quartic terms of the mesonic interaction are converted to a quadratic term with the help of a Hubbard-Stratonovich transformation. Effective mass terms are generated this way, which are treated self-consistently to leading order of a $1/N$-expansion. We calculate the light $<\\bar q q>$ and stran"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9312252","kind":"arxiv","version":2},"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"}