{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:OISPZT67K2O7BTHLREIRWNJP4X","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":"702631fd8319d1b1c43a99eee9f2a57a8af9c381a22865291954c830e1dbba53","cross_cats_sorted":["astro-ph.CO","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-01-18T20:33:38Z","title_canon_sha256":"7b2dc6d7762176e7d209f9439cb969582b382b0bc56bfae38344f71711a84450"},"schema_version":"1.0","source":{"id":"1301.4486","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1301.4486","created_at":"2026-05-18T01:00:20Z"},{"alias_kind":"arxiv_version","alias_value":"1301.4486v1","created_at":"2026-05-18T01:00:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1301.4486","created_at":"2026-05-18T01:00:20Z"},{"alias_kind":"pith_short_12","alias_value":"OISPZT67K2O7","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_16","alias_value":"OISPZT67K2O7BTHL","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_8","alias_value":"OISPZT67","created_at":"2026-05-18T12:27:54Z"}],"graph_snapshots":[{"event_id":"sha256:0cb065853e866e34fa60ed340ceadd126c3b3ba52c287d5c20ea396654971213","target":"graph","created_at":"2026-05-18T01:00:20Z","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":"We summarize the present state of research on the darkon fuid as a model for the dark sector of the Universe. Nonrelativistic massless particles are introduced as a realization of the Galilei group in an enlarged phase space. The additional degrees of freedom allow for a nonstandard, minimal coupling to gravity respecting Einstein's equivalence principle. Extended to a self-gravitating fluid the Poisson equation for the gravitational potential contains a dynamically generated effective gravitational mass density of either sign. The equations of motion (EOMs) contain no free parameters and are ","authors_text":"P.C. Stichel, W.J. Zakrzewski","cross_cats":["astro-ph.CO","hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-01-18T20:33:38Z","title":"Nonstandard approach to gravity for the dark sector of the Universe"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1301.4486","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":"sha256:57bc4e7ab95ddde56de53451614b7c39083cea535b4fa0ae10268953fdd97af3","target":"record","created_at":"2026-05-18T01:00:20Z","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":"702631fd8319d1b1c43a99eee9f2a57a8af9c381a22865291954c830e1dbba53","cross_cats_sorted":["astro-ph.CO","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-01-18T20:33:38Z","title_canon_sha256":"7b2dc6d7762176e7d209f9439cb969582b382b0bc56bfae38344f71711a84450"},"schema_version":"1.0","source":{"id":"1301.4486","kind":"arxiv","version":1}},"canonical_sha256":"7224fccfdf569df0cceb89111b352fe5f4c5802571a45d8371eec3724f92442f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7224fccfdf569df0cceb89111b352fe5f4c5802571a45d8371eec3724f92442f","first_computed_at":"2026-05-18T01:00:20.876014Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:00:20.876014Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RIzVDovFAZitNHPGX8QtslrgUOn678P1+rSqIAJ5nfxt0c1Q1lLOmGHpH51piIW48+TWpxpmwK0aIcRv/0ztAw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:00:20.876707Z","signed_message":"canonical_sha256_bytes"},"source_id":"1301.4486","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:57bc4e7ab95ddde56de53451614b7c39083cea535b4fa0ae10268953fdd97af3","sha256:0cb065853e866e34fa60ed340ceadd126c3b3ba52c287d5c20ea396654971213"],"state_sha256":"6789898000f0495961964345a0b61564074e317272aeaa5f105bd7e68cd412d9"}