{"paper":{"title":"Universal field equations for metric-affine theories of gravity","license":"","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"M. Ujevic, V. Tapia","submitted_at":"2006-05-25T20:23:34Z","abstract_excerpt":"We show that almost all metric--affine theories of gravity yield Einstein equations with a non--null cosmological constant $\\Lambda$. Under certain circumstances and for any dimension, it is also possible to incorporate a Weyl vector field $W_\\mu$ and therefore the presence of an anisotropy. The viability of these field equations is discussed in view of recent astrophysical observations."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"gr-qc/0605132","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"}