{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:ECZT2IPXHWVQQEKLCQSXMPC7ZK","short_pith_number":"pith:ECZT2IPX","canonical_record":{"source":{"id":"1005.2180","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2010-05-12T19:54:45Z","cross_cats_sorted":["astro-ph.CO","gr-qc"],"title_canon_sha256":"02ca3a23caa438e1067aaf257c76e42ba89bf5bedbdd52a79f588c322f12cecb","abstract_canon_sha256":"bf469a4e1faa1ebc47e23e0c30c37b9239e66531c6d056127d86f39d0f154677"},"schema_version":"1.0"},"canonical_sha256":"20b33d21f73dab08114b1425763c5fca995e55a27f3c47dd0802014c2b010be2","source":{"kind":"arxiv","id":"1005.2180","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1005.2180","created_at":"2026-05-18T02:33:26Z"},{"alias_kind":"arxiv_version","alias_value":"1005.2180v3","created_at":"2026-05-18T02:33:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1005.2180","created_at":"2026-05-18T02:33:26Z"},{"alias_kind":"pith_short_12","alias_value":"ECZT2IPXHWVQ","created_at":"2026-05-18T12:26:06Z"},{"alias_kind":"pith_short_16","alias_value":"ECZT2IPXHWVQQEKL","created_at":"2026-05-18T12:26:06Z"},{"alias_kind":"pith_short_8","alias_value":"ECZT2IPX","created_at":"2026-05-18T12:26:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:ECZT2IPXHWVQQEKLCQSXMPC7ZK","target":"record","payload":{"canonical_record":{"source":{"id":"1005.2180","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2010-05-12T19:54:45Z","cross_cats_sorted":["astro-ph.CO","gr-qc"],"title_canon_sha256":"02ca3a23caa438e1067aaf257c76e42ba89bf5bedbdd52a79f588c322f12cecb","abstract_canon_sha256":"bf469a4e1faa1ebc47e23e0c30c37b9239e66531c6d056127d86f39d0f154677"},"schema_version":"1.0"},"canonical_sha256":"20b33d21f73dab08114b1425763c5fca995e55a27f3c47dd0802014c2b010be2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:33:26.508954Z","signature_b64":"AVdcHeCBsa2zGXdKN7/BNpnzTOuM9bTLbu0LfoXW03pAzZbjI+laxtpoqDvgomAd7UQkpMKb5VTHpjtTYXB/DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"20b33d21f73dab08114b1425763c5fca995e55a27f3c47dd0802014c2b010be2","last_reissued_at":"2026-05-18T02:33:26.508486Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:33:26.508486Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1005.2180","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:33:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CKhepiIaILdi3lI3G15YJjp0fwGrMDP+wwtjMFRWsVDYfp754UOnNVlf4FqN2Xr40HHKNYC5LXN/+1QyVcd2CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T21:18:06.417401Z"},"content_sha256":"31a8ddec3d38d7ad9f3d203e43bb523c4292d41acf7fda87dcaf66a073e5efc1","schema_version":"1.0","event_id":"sha256:31a8ddec3d38d7ad9f3d203e43bb523c4292d41acf7fda87dcaf66a073e5efc1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:ECZT2IPXHWVQQEKLCQSXMPC7ZK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Crossing the phantom divide with Ricci-like holographic dark energy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","gr-qc"],"primary_cat":"hep-th","authors_text":"Francisco Pena, Samuel Lepe","submitted_at":"2010-05-12T19:54:45Z","abstract_excerpt":"We study a holographic model for the dark energy considered recently in the literature which postulates an energy density $\\rho \\sim R$, where $R$ is the Ricci scalar curvature. We obtain a cosmological scenario that comes from considering two non-interacting fluids along a reasonable Ansatz for the cosmic coincidence parameter. We adjust the involved parameters in the model according to the observational data and we show that the equation of state for the dark energy experience a cross through the -1 barrier. In addition, we find a disagreement in these parameters with respect to an approach "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1005.2180","kind":"arxiv","version":3},"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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:33:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WzQviWJ0SEGuzeUIHN1YEgg7z9MwjUtkFSPOh+X4XKg4RW2p8AN1Yu9vQrlHYknY7Y9oyt61JrhMFbPV51TYBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T21:18:06.417782Z"},"content_sha256":"1c43e8855633664c56f35729b1a33594e11136fef9240d1eb41e6c6d511d421b","schema_version":"1.0","event_id":"sha256:1c43e8855633664c56f35729b1a33594e11136fef9240d1eb41e6c6d511d421b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ECZT2IPXHWVQQEKLCQSXMPC7ZK/bundle.json","state_url":"https://pith.science/pith/ECZT2IPXHWVQQEKLCQSXMPC7ZK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ECZT2IPXHWVQQEKLCQSXMPC7ZK/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-27T21:18:06Z","links":{"resolver":"https://pith.science/pith/ECZT2IPXHWVQQEKLCQSXMPC7ZK","bundle":"https://pith.science/pith/ECZT2IPXHWVQQEKLCQSXMPC7ZK/bundle.json","state":"https://pith.science/pith/ECZT2IPXHWVQQEKLCQSXMPC7ZK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ECZT2IPXHWVQQEKLCQSXMPC7ZK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:ECZT2IPXHWVQQEKLCQSXMPC7ZK","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":"bf469a4e1faa1ebc47e23e0c30c37b9239e66531c6d056127d86f39d0f154677","cross_cats_sorted":["astro-ph.CO","gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2010-05-12T19:54:45Z","title_canon_sha256":"02ca3a23caa438e1067aaf257c76e42ba89bf5bedbdd52a79f588c322f12cecb"},"schema_version":"1.0","source":{"id":"1005.2180","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1005.2180","created_at":"2026-05-18T02:33:26Z"},{"alias_kind":"arxiv_version","alias_value":"1005.2180v3","created_at":"2026-05-18T02:33:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1005.2180","created_at":"2026-05-18T02:33:26Z"},{"alias_kind":"pith_short_12","alias_value":"ECZT2IPXHWVQ","created_at":"2026-05-18T12:26:06Z"},{"alias_kind":"pith_short_16","alias_value":"ECZT2IPXHWVQQEKL","created_at":"2026-05-18T12:26:06Z"},{"alias_kind":"pith_short_8","alias_value":"ECZT2IPX","created_at":"2026-05-18T12:26:06Z"}],"graph_snapshots":[{"event_id":"sha256:1c43e8855633664c56f35729b1a33594e11136fef9240d1eb41e6c6d511d421b","target":"graph","created_at":"2026-05-18T02:33:26Z","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 study a holographic model for the dark energy considered recently in the literature which postulates an energy density $\\rho \\sim R$, where $R$ is the Ricci scalar curvature. We obtain a cosmological scenario that comes from considering two non-interacting fluids along a reasonable Ansatz for the cosmic coincidence parameter. We adjust the involved parameters in the model according to the observational data and we show that the equation of state for the dark energy experience a cross through the -1 barrier. In addition, we find a disagreement in these parameters with respect to an approach ","authors_text":"Francisco Pena, Samuel Lepe","cross_cats":["astro-ph.CO","gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2010-05-12T19:54:45Z","title":"Crossing the phantom divide with Ricci-like holographic dark energy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1005.2180","kind":"arxiv","version":3},"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":"sha256:31a8ddec3d38d7ad9f3d203e43bb523c4292d41acf7fda87dcaf66a073e5efc1","target":"record","created_at":"2026-05-18T02:33:26Z","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":"bf469a4e1faa1ebc47e23e0c30c37b9239e66531c6d056127d86f39d0f154677","cross_cats_sorted":["astro-ph.CO","gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2010-05-12T19:54:45Z","title_canon_sha256":"02ca3a23caa438e1067aaf257c76e42ba89bf5bedbdd52a79f588c322f12cecb"},"schema_version":"1.0","source":{"id":"1005.2180","kind":"arxiv","version":3}},"canonical_sha256":"20b33d21f73dab08114b1425763c5fca995e55a27f3c47dd0802014c2b010be2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"20b33d21f73dab08114b1425763c5fca995e55a27f3c47dd0802014c2b010be2","first_computed_at":"2026-05-18T02:33:26.508486Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:33:26.508486Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"AVdcHeCBsa2zGXdKN7/BNpnzTOuM9bTLbu0LfoXW03pAzZbjI+laxtpoqDvgomAd7UQkpMKb5VTHpjtTYXB/DA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:33:26.508954Z","signed_message":"canonical_sha256_bytes"},"source_id":"1005.2180","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:31a8ddec3d38d7ad9f3d203e43bb523c4292d41acf7fda87dcaf66a073e5efc1","sha256:1c43e8855633664c56f35729b1a33594e11136fef9240d1eb41e6c6d511d421b"],"state_sha256":"f86107fa5267d1cd1a582da3c10fdd1f0e9d9233ad50c1bbd71309ad15bde73d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0fviUvRGrVSNQGQIQQhbhK88GA7zL8pnjZeToMmzO1QM2C+7wZ1RVcnabf/2HhJl4E+trloRZT6kW5k90IWeBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T21:18:06.420902Z","bundle_sha256":"944057c08f14206c3a989bde9fdfcb91c211a83cbee286728c3df44ed09ba0b2"}}