{"paper":{"title":"Dynamical Mechanism for Varying Light Velocity as a Solution to Cosmological Problems","license":"","headline":"","cross_cats":["gr-qc","hep-th"],"primary_cat":"astro-ph","authors_text":"J. W. Moffat, M. A. Clayton","submitted_at":"1998-12-30T23:36:42Z","abstract_excerpt":"A dynamical model for varying light velocity in cosmology is developed, based on the idea that there are two metrics in spacetime. One metric $g_{\\mu\\nu}$ describes the standard gravitational vacuum, and the other ${\\hat g}_{\\mu\\nu} =g_{\\mu\\nu}+\\beta\\psi_\\mu\\psi_\\nu$ describes the geometry through which matter fields propagate. Matter propagating causally with respect to $\\hat{g}_{\\mu\\nu}$ can provide acausal contributions to the matter stress-energy tensor in the field equations for $g_{\\mu\\nu}$, which, as we explicitly demonstrate with perfect fluid and scalar field matter models, provides a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9812481","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/astro-ph/9812481/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"}