{"paper":{"title":"General Covariance and Free Fields in Two Dimensions","license":"","headline":"","cross_cats":["gr-qc"],"primary_cat":"hep-th","authors_text":"D.J.Navarro, J. Cruz, J. Navarro-Salas","submitted_at":"1997-12-19T12:57:22Z","abstract_excerpt":"We investigate the canonical equivalence of a matter-coupled 2D dilaton gravity theory defined by the action functional $S = \\int d^2x \\sqrt{-g} (R\\phi + V(\\phi) - 1/2 H(\\phi ) (\\nablaf)^2)$, and a free field theory. When the scalar field $f$ is minimally coupled to the metric field$(H(\\phi)=1)$ the theory is equivalent, up to a boundary contribution,to a theory of three free scalar fields with indefinite kinetic terms, irrespective of the particular form of the potential $V(\\phi)$. If the potential is an exponential function of the dilaton one recovers a generalized form of the classical cano"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-th/9712194","kind":"arxiv","version":1},"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"}