{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2003:O7U2YQ5XKBR2IIYI2CIGDBKSRT","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":"4da303f9c9b33f67319b3fb6ec46249d9f27117422c7710370817f5da1bb277e","cross_cats_sorted":["astro-ph","gr-qc"],"license":"","primary_cat":"hep-th","submitted_at":"2003-07-14T17:06:45Z","title_canon_sha256":"96dd37ae2af60dfa778323655b8af71b0d63b0d62a6e087b7bda1e25206a3e7b"},"schema_version":"1.0","source":{"id":"hep-th/0307128","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-th/0307128","created_at":"2026-07-04T15:23:16Z"},{"alias_kind":"arxiv_version","alias_value":"hep-th/0307128v2","created_at":"2026-07-04T15:23:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-th/0307128","created_at":"2026-07-04T15:23:16Z"},{"alias_kind":"pith_short_12","alias_value":"O7U2YQ5XKBR2","created_at":"2026-07-04T15:23:16Z"},{"alias_kind":"pith_short_16","alias_value":"O7U2YQ5XKBR2IIYI","created_at":"2026-07-04T15:23:16Z"},{"alias_kind":"pith_short_8","alias_value":"O7U2YQ5X","created_at":"2026-07-04T15:23:16Z"}],"graph_snapshots":[{"event_id":"sha256:5215f9e89e3e860917fb790cfe8ad26c91d932473f614645e790aa69e67786ff","target":"graph","created_at":"2026-07-04T15:23:16Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/hep-th/0307128/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We discuss a class of phantom ($p < - \\varrho$) cosmological models. Except for phantom we admit various forms of standard types of matter and discuss the problem of singularities for these cosmologies. The singularities are different from those of standard matter cosmology since they appear for infinite values of the scale factor. We also find an interesting relation between the phantom models and standard matter models which is like the duality symmetry of string cosmology.","authors_text":"Marek Szydlowski, Mariusz P. Dabrowski, Tomasz Stachowiak","cross_cats":["astro-ph","gr-qc"],"headline":"","license":"","primary_cat":"hep-th","submitted_at":"2003-07-14T17:06:45Z","title":"Phantom cosmologies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-th/0307128","kind":"arxiv","version":2},"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":"sha256:958c67606e4b336fd4fea932871f7ed6f6dfd17b15401d5b08bba271709bbad8","target":"record","created_at":"2026-07-04T15:23:16Z","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":"4da303f9c9b33f67319b3fb6ec46249d9f27117422c7710370817f5da1bb277e","cross_cats_sorted":["astro-ph","gr-qc"],"license":"","primary_cat":"hep-th","submitted_at":"2003-07-14T17:06:45Z","title_canon_sha256":"96dd37ae2af60dfa778323655b8af71b0d63b0d62a6e087b7bda1e25206a3e7b"},"schema_version":"1.0","source":{"id":"hep-th/0307128","kind":"arxiv","version":2}},"canonical_sha256":"77e9ac43b75063a42308d0906185528cce7e1fbfd2138b15e7dc7ebb72118120","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"77e9ac43b75063a42308d0906185528cce7e1fbfd2138b15e7dc7ebb72118120","first_computed_at":"2026-07-04T15:23:16.100143Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:23:16.100143Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"hxlpZt+jfdqzhiRSUhyam9mCXDE0quv5kD/b7pmqInCXp6I8MLFf2hi1fhVFidcXNRkzMFSP9JIElXjgTSH9CQ==","signature_status":"signed_v1","signed_at":"2026-07-04T15:23:16.100537Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-th/0307128","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:958c67606e4b336fd4fea932871f7ed6f6dfd17b15401d5b08bba271709bbad8","sha256:5215f9e89e3e860917fb790cfe8ad26c91d932473f614645e790aa69e67786ff"],"state_sha256":"eebe6b79dc616f0a3e70777280f4fbcdb41e9ee8b01e4c6a679005985e2b9eff"}