{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:LZBRDSJX4C2JRBBJ5K6TKUI6AA","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":"cba8c4fdafbcd2d5f7be2785224faf2339ee5e48634bab19c18b79b323268aa8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-04-23T05:26:27Z","title_canon_sha256":"fee2f0915bb927dd8b2219d10be12447192e74e6ba741362cad72d246a37b851"},"schema_version":"1.0","source":{"id":"1404.5706","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1404.5706","created_at":"2026-05-18T02:48:09Z"},{"alias_kind":"arxiv_version","alias_value":"1404.5706v2","created_at":"2026-05-18T02:48:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1404.5706","created_at":"2026-05-18T02:48:09Z"},{"alias_kind":"pith_short_12","alias_value":"LZBRDSJX4C2J","created_at":"2026-05-18T12:28:38Z"},{"alias_kind":"pith_short_16","alias_value":"LZBRDSJX4C2JRBBJ","created_at":"2026-05-18T12:28:38Z"},{"alias_kind":"pith_short_8","alias_value":"LZBRDSJX","created_at":"2026-05-18T12:28:38Z"}],"graph_snapshots":[{"event_id":"sha256:2626fa51eae167894686f9b56f7d652062b1a21d8892e68cfc3b2a0651196a21","target":"graph","created_at":"2026-05-18T02:48:09Z","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 present improved constraints on an interacting vacuum model using updated astronomical observations including the first data release from Planck. We consider a model with one dimensionless parameter, $\\alpha$, describing the interaction between dark matter and vacuum energy (with fixed equation of state $w=-1$). The background dynamics correspond to a generalised Chaplygin gas cosmology, but the perturbations have a zero sound speed. The tension between the value of the Hubble constant, $H_0$, determined by Planck data plus WMAP polarisation (Planck+WP) and that determined by the Hubble Spa","authors_text":"David Wands, Gong-Bo Zhao, Lixin Xu, Yuting Wang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-04-23T05:26:27Z","title":"Post-$Planck$ constraints on interacting vacuum energy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1404.5706","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:e11685843bfce3255b268edeafeb3ecc814b4eaec8d819b0353314d3d2717d18","target":"record","created_at":"2026-05-18T02:48:09Z","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":"cba8c4fdafbcd2d5f7be2785224faf2339ee5e48634bab19c18b79b323268aa8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-04-23T05:26:27Z","title_canon_sha256":"fee2f0915bb927dd8b2219d10be12447192e74e6ba741362cad72d246a37b851"},"schema_version":"1.0","source":{"id":"1404.5706","kind":"arxiv","version":2}},"canonical_sha256":"5e4311c937e0b4988429eabd35511e000777e0d55707856ded6b49bbd7a42ae5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5e4311c937e0b4988429eabd35511e000777e0d55707856ded6b49bbd7a42ae5","first_computed_at":"2026-05-18T02:48:09.311325Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:48:09.311325Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"rtnqfq9wUAoS8v+98SCbjdm6306LaknD9F5xFQA1+G6H0P3cmQ895nunyrmcMSMs93zoqm0tuUzbD3aPTYytBg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:48:09.311880Z","signed_message":"canonical_sha256_bytes"},"source_id":"1404.5706","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e11685843bfce3255b268edeafeb3ecc814b4eaec8d819b0353314d3d2717d18","sha256:2626fa51eae167894686f9b56f7d652062b1a21d8892e68cfc3b2a0651196a21"],"state_sha256":"b85b9c1cd9cc9a4ab5a4390a8a11bfa87cf24bc381ae975c1e5dc4f1b2e24b3d"}