{"paper":{"title":"Non-local gravity with a Weyl-square term","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","gr-qc"],"primary_cat":"hep-th","authors_text":"Giulia Cusin, Michele Maggiore, Michele Mancarella, Stefano Foffa","submitted_at":"2015-12-20T13:38:52Z","abstract_excerpt":"Recent work has shown that modifications of General Relativity based on the addition to the action of a non-local term $R\\,\\Box^{-2}R$, or on the addition to the equations of motion of a term involving $(g_{\\mu\\nu}\\Box^{-1} R)$, produce dynamical models of dark energy which are cosmologically viable both at the background level and at the level of cosmological perturbations. We explore a more general class of models based on the addition to the action of terms proportional to $R_{\\mu\\nu}\\,\\Box^{-2}R^{\\mu\\nu}$ and $C_{\\mu\\nu\\rho\\sigma}\\, \\Box^{-2}C^{\\mu\\nu\\rho\\sigma}$, where $C_{\\mu\\nu\\rho\\sigm"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.06373","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"}