{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:UGWQ5Q5K5EVOXCZI7N4HO2LJEO","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"d0dff753034148a9af976f557b64fed2230bc8c2975d047ecc724127a5fdb3ac","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-11-13T21:00:08Z","title_canon_sha256":"7cc41ac13db748e96e7a8bf97964cec1d8a7b145b4d43b227ed1601ff4196dff"},"schema_version":"1.0","source":{"id":"1211.3125","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1211.3125","created_at":"2026-05-18T01:53:15Z"},{"alias_kind":"arxiv_version","alias_value":"1211.3125v1","created_at":"2026-05-18T01:53:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1211.3125","created_at":"2026-05-18T01:53:15Z"},{"alias_kind":"pith_short_12","alias_value":"UGWQ5Q5K5EVO","created_at":"2026-05-18T12:27:23Z"},{"alias_kind":"pith_short_16","alias_value":"UGWQ5Q5K5EVOXCZI","created_at":"2026-05-18T12:27:23Z"},{"alias_kind":"pith_short_8","alias_value":"UGWQ5Q5K","created_at":"2026-05-18T12:27:23Z"}],"graph_snapshots":[{"event_id":"sha256:b16239236f3f826de63e63cb48af113d5c5927fdbe55d3d6960fa082b0f3c063","target":"graph","created_at":"2026-05-18T01:53:15Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"The origin of the accelerated expansion of the universe is still unclear and new physics is needed on cosmological scales. We propose and test a novel interpretation of dark energy as originated by an elastic strain due to a cosmic defect in an otherwise Euclidean space-time. The strain modifies the expansion history of the universe. This new effective contribution tracks radiation at early times and mimics a cosmological constant at late times. The theory is tested against observations, from nucleosynthesis to the cosmic microwave background and formation and evolution of large scale structur","authors_text":"A. Tartaglia, M. Sereno, N. Radicella","cross_cats":["gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-11-13T21:00:08Z","title":"Dark energy as an elastic strain fluid"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.3125","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:cd7e6f75acae243140ea4d86948711ba268f7945cb2f814732535fc567c748dd","target":"record","created_at":"2026-05-18T01:53:15Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"d0dff753034148a9af976f557b64fed2230bc8c2975d047ecc724127a5fdb3ac","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-11-13T21:00:08Z","title_canon_sha256":"7cc41ac13db748e96e7a8bf97964cec1d8a7b145b4d43b227ed1601ff4196dff"},"schema_version":"1.0","source":{"id":"1211.3125","kind":"arxiv","version":1}},"canonical_sha256":"a1ad0ec3aae92aeb8b28fb7877696923aa395d4dfa1b5c2b39569225a9755e17","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a1ad0ec3aae92aeb8b28fb7877696923aa395d4dfa1b5c2b39569225a9755e17","first_computed_at":"2026-05-18T01:53:15.957155Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:53:15.957155Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"fv1SD48R2G+XGmjsUbf5lTm+RttJi3Cpzno3HYaOab7gWOSwHWW4ukvZmpn1tzEzF8tfNcSFXH0q5Bwmt8zFCw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:53:15.957537Z","signed_message":"canonical_sha256_bytes"},"source_id":"1211.3125","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cd7e6f75acae243140ea4d86948711ba268f7945cb2f814732535fc567c748dd","sha256:b16239236f3f826de63e63cb48af113d5c5927fdbe55d3d6960fa082b0f3c063"],"state_sha256":"1487eb00414c62154dc9a3077c9d9bc53918eb5b442259697d1695ad5a7fd15b"}