{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:KKNA7XOAILCSW6LEMZ7Q3LGRTO","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":"dfbd4aee7f41089c411f5ce7ca9f8eb57696c4971fd5c3d0cc42d71a540b883d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2012-06-25T14:22:49Z","title_canon_sha256":"b5e8adea72e45c65173495bfd896a0506cc7dba8a2a72579ee50f7e93a7ed62f"},"schema_version":"1.0","source":{"id":"1206.5797","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1206.5797","created_at":"2026-05-18T01:56:42Z"},{"alias_kind":"arxiv_version","alias_value":"1206.5797v1","created_at":"2026-05-18T01:56:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1206.5797","created_at":"2026-05-18T01:56:42Z"},{"alias_kind":"pith_short_12","alias_value":"KKNA7XOAILCS","created_at":"2026-05-18T12:27:11Z"},{"alias_kind":"pith_short_16","alias_value":"KKNA7XOAILCSW6LE","created_at":"2026-05-18T12:27:11Z"},{"alias_kind":"pith_short_8","alias_value":"KKNA7XOA","created_at":"2026-05-18T12:27:11Z"}],"graph_snapshots":[{"event_id":"sha256:7ffc204a598b76fa04e2b3f76e83c0d3b82cfaa2d10bad632235dfec7510ffa6","target":"graph","created_at":"2026-05-18T01:56:42Z","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":"In conventional approach to the chameleon mechanism, by assuming a static and spherically symmetric solutions in which matter density and chameleon field are given by $\\rho=\\rho(r)$ and $\\phi=\\phi(r)$, it has been shown that mass of chameleon field is matter density-dependent. In regions of high matter density such as earth, chameleon field is massive, in solar system it is low and in cosmological scales it is very low. In this article we revisit the mechanism in cosmological scales by assuming a redshift dependence of the matter density and chameleon field, i.e. $\\rho=\\rho(z)$, $\\phi=\\phi(z)$","authors_text":"A. Salehi, H. Farajollahi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2012-06-25T14:22:49Z","title":"Chameleon gravity on cosmological scales"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1206.5797","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":"sha256:8718ebdca2ca755bc5d66febe17babac6527b41d567811f7e00293e98b5a61d5","target":"record","created_at":"2026-05-18T01:56:42Z","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":"dfbd4aee7f41089c411f5ce7ca9f8eb57696c4971fd5c3d0cc42d71a540b883d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2012-06-25T14:22:49Z","title_canon_sha256":"b5e8adea72e45c65173495bfd896a0506cc7dba8a2a72579ee50f7e93a7ed62f"},"schema_version":"1.0","source":{"id":"1206.5797","kind":"arxiv","version":1}},"canonical_sha256":"529a0fddc042c52b7964667f0dacd19b897ebf29c19f609ee39e54bdea9c824c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"529a0fddc042c52b7964667f0dacd19b897ebf29c19f609ee39e54bdea9c824c","first_computed_at":"2026-05-18T01:56:42.059285Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:56:42.059285Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bi7nfmn/cL+keCou5PkIbgnnoJmswcugASJv3uI57MHbt6z55GJPHWXGzBWqu769h3p0HvXBmfIc/228Fj0UAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:56:42.059993Z","signed_message":"canonical_sha256_bytes"},"source_id":"1206.5797","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8718ebdca2ca755bc5d66febe17babac6527b41d567811f7e00293e98b5a61d5","sha256:7ffc204a598b76fa04e2b3f76e83c0d3b82cfaa2d10bad632235dfec7510ffa6"],"state_sha256":"5efd4274ae8ab1f9e4135870a53864d1f0b0e974955855ef07de082b5b1a42f7"}