{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2011:2FXV345MBJQLGNKJLBSFZJPBTQ","short_pith_number":"pith:2FXV345M","schema_version":"1.0","canonical_sha256":"d16f5df3ac0a60b3354958645ca5e19c0422e5a7269c32f797dbc18cdb053016","source":{"kind":"arxiv","id":"1109.6538","version":2},"attestation_state":"computed","paper":{"title":"Lorentzian spinfoam propagator","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Eugenio Bianchi, You Ding","submitted_at":"2011-09-29T14:25:42Z","abstract_excerpt":"The two-point correlation function is calculated in the Lorentzian EPRL spinfoam model, and shown to match with the one in Regge calculus in a proper limit: large boundary spins, and small Barbero-Immirzi parameter, keeping the size of the quantum geometry finite and fixed. Compared to the Euclidean case, the definition of a Lorentzian boundary state involves a new feature: the notion of past- and future-pointing intertwiners. The semiclassical correlation function is obtained for a time-oriented semiclassical boundary state."},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1109.6538","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2011-09-29T14:25:42Z","cross_cats_sorted":[],"title_canon_sha256":"db33588845d4359947c2981cd1dd332d85a235ec59bd439b774afc3207d0ac0e","abstract_canon_sha256":"8256bb5822df8d10b67ca07cfae5103f148c969b6b2156193c06c865b87b8543"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:38:34.517534Z","signature_b64":"ZcZVEVTdUxUItA4c5CZGhGQc+qhbDRpV4sCKC57V5SnhNB91GxpX+xu/SKGGnWW8YGbyP87J3W6up0oTESG3Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d16f5df3ac0a60b3354958645ca5e19c0422e5a7269c32f797dbc18cdb053016","last_reissued_at":"2026-05-18T03:38:34.517008Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:38:34.517008Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Lorentzian spinfoam propagator","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Eugenio Bianchi, You Ding","submitted_at":"2011-09-29T14:25:42Z","abstract_excerpt":"The two-point correlation function is calculated in the Lorentzian EPRL spinfoam model, and shown to match with the one in Regge calculus in a proper limit: large boundary spins, and small Barbero-Immirzi parameter, keeping the size of the quantum geometry finite and fixed. Compared to the Euclidean case, the definition of a Lorentzian boundary state involves a new feature: the notion of past- and future-pointing intertwiners. The semiclassical correlation function is obtained for a time-oriented semiclassical boundary state."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1109.6538","kind":"arxiv","version":2},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1109.6538","created_at":"2026-05-18T03:38:34.517092+00:00"},{"alias_kind":"arxiv_version","alias_value":"1109.6538v2","created_at":"2026-05-18T03:38:34.517092+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1109.6538","created_at":"2026-05-18T03:38:34.517092+00:00"},{"alias_kind":"pith_short_12","alias_value":"2FXV345MBJQL","created_at":"2026-05-18T12:26:18.847500+00:00"},{"alias_kind":"pith_short_16","alias_value":"2FXV345MBJQLGNKJ","created_at":"2026-05-18T12:26:18.847500+00:00"},{"alias_kind":"pith_short_8","alias_value":"2FXV345M","created_at":"2026-05-18T12:26:18.847500+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":2,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2403.06053","citing_title":"Spinfoams, $\\gamma$-duality and parity violation in primordial gravitational waves","ref_index":59,"is_internal_anchor":true},{"citing_arxiv_id":"2604.24945","citing_title":"Toller matrices and the Feynman $i\\varepsilon$ in spinfoams","ref_index":63,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/2FXV345MBJQLGNKJLBSFZJPBTQ","json":"https://pith.science/pith/2FXV345MBJQLGNKJLBSFZJPBTQ.json","graph_json":"https://pith.science/api/pith-number/2FXV345MBJQLGNKJLBSFZJPBTQ/graph.json","events_json":"https://pith.science/api/pith-number/2FXV345MBJQLGNKJLBSFZJPBTQ/events.json","paper":"https://pith.science/paper/2FXV345M"},"agent_actions":{"view_html":"https://pith.science/pith/2FXV345MBJQLGNKJLBSFZJPBTQ","download_json":"https://pith.science/pith/2FXV345MBJQLGNKJLBSFZJPBTQ.json","view_paper":"https://pith.science/paper/2FXV345M","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1109.6538&json=true","fetch_graph":"https://pith.science/api/pith-number/2FXV345MBJQLGNKJLBSFZJPBTQ/graph.json","fetch_events":"https://pith.science/api/pith-number/2FXV345MBJQLGNKJLBSFZJPBTQ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/2FXV345MBJQLGNKJLBSFZJPBTQ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/2FXV345MBJQLGNKJLBSFZJPBTQ/action/storage_attestation","attest_author":"https://pith.science/pith/2FXV345MBJQLGNKJLBSFZJPBTQ/action/author_attestation","sign_citation":"https://pith.science/pith/2FXV345MBJQLGNKJLBSFZJPBTQ/action/citation_signature","submit_replication":"https://pith.science/pith/2FXV345MBJQLGNKJLBSFZJPBTQ/action/replication_record"}},"created_at":"2026-05-18T03:38:34.517092+00:00","updated_at":"2026-05-18T03:38:34.517092+00:00"}