{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:JYPINM5VF4425DHKNOGMBVYNFP","short_pith_number":"pith:JYPINM5V","canonical_record":{"source":{"id":"1308.2545","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2013-08-12T12:53:48Z","cross_cats_sorted":["hep-ph","nucl-th"],"title_canon_sha256":"d02a88595d466656f1e9c40e3af7cfcc83938460d2d89457c890af01768b89a7","abstract_canon_sha256":"420b23db6b9d177445ad2f68d6f858ef5b4ba88f0908aa807f013d02cb5d8160"},"schema_version":"1.0"},"canonical_sha256":"4e1e86b3b52f39ae8cea6b8cc0d70d2bce96045f012e4e921aa925a8c145700f","source":{"kind":"arxiv","id":"1308.2545","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1308.2545","created_at":"2026-05-18T03:08:46Z"},{"alias_kind":"arxiv_version","alias_value":"1308.2545v1","created_at":"2026-05-18T03:08:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1308.2545","created_at":"2026-05-18T03:08:46Z"},{"alias_kind":"pith_short_12","alias_value":"JYPINM5VF442","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_16","alias_value":"JYPINM5VF4425DHK","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_8","alias_value":"JYPINM5V","created_at":"2026-05-18T12:27:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:JYPINM5VF4425DHKNOGMBVYNFP","target":"record","payload":{"canonical_record":{"source":{"id":"1308.2545","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2013-08-12T12:53:48Z","cross_cats_sorted":["hep-ph","nucl-th"],"title_canon_sha256":"d02a88595d466656f1e9c40e3af7cfcc83938460d2d89457c890af01768b89a7","abstract_canon_sha256":"420b23db6b9d177445ad2f68d6f858ef5b4ba88f0908aa807f013d02cb5d8160"},"schema_version":"1.0"},"canonical_sha256":"4e1e86b3b52f39ae8cea6b8cc0d70d2bce96045f012e4e921aa925a8c145700f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:08:46.774660Z","signature_b64":"1JZcs2FrlaiuYuif/qmCJEX1BG33XsRRkfqweun+s+U1IIihpONo2lzrd8i/2O1YhNov3fd9maDUKtEMQUPkCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4e1e86b3b52f39ae8cea6b8cc0d70d2bce96045f012e4e921aa925a8c145700f","last_reissued_at":"2026-05-18T03:08:46.774220Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:08:46.774220Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1308.2545","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:08:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XeYgjJP4n2DammvIOPYwoK5LRb4+VpKnxmF63FpsYooToKIEqyzSQ4xV6GYRi87UqcPPJyWSbu0iR7Ko7zKzBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T21:57:31.718821Z"},"content_sha256":"324716b4dcb4a0e163bfecc15ae91584b9c13de06e4e5943a14b6bcde0b7fd43","schema_version":"1.0","event_id":"sha256:324716b4dcb4a0e163bfecc15ae91584b9c13de06e4e5943a14b6bcde0b7fd43"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:JYPINM5VF4425DHKNOGMBVYNFP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Tetraquarks, hadronic molecules, meson-meson scattering and disconnected contributions in lattice QCD","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph","nucl-th"],"primary_cat":"hep-lat","authors_text":"Feng-Kun Guo, Liuming Liu, Ping Wang, Ulf-G. Mei{\\ss}ner","submitted_at":"2013-08-12T12:53:48Z","abstract_excerpt":"There are generally two types of Wick contractions in lattice QCD calculations of a correlation function --- connected and disconnected ones. The disconnected contribution is difficult to calculate and noisy, thus it is often neglected. In the context of studying tetraquarks, hadronic molecules and meson-meson scattering, we show that whenever there are both connected and singly disconnected contractions, the singly disconnected part gives the leading order contribution, and thus should never be neglected. As an explicit example, we show that information about the scalar mesons sigma, f0(980),"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1308.2545","kind":"arxiv","version":1},"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":"2026-05-18T03:08:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"es5i7aho+XvrC6XFNnf5Hh+b0cSFXSqWwBNjR+3Q6sxym9txyWykbfeNQMSsPgIuCUl2GYhswyJP+72SA5lRDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T21:57:31.719451Z"},"content_sha256":"6480aea2229313c437a11614cf52939106aa8863b5c92f6cc2dd86909e3a42c6","schema_version":"1.0","event_id":"sha256:6480aea2229313c437a11614cf52939106aa8863b5c92f6cc2dd86909e3a42c6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JYPINM5VF4425DHKNOGMBVYNFP/bundle.json","state_url":"https://pith.science/pith/JYPINM5VF4425DHKNOGMBVYNFP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JYPINM5VF4425DHKNOGMBVYNFP/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":"2026-05-25T21:57:31Z","links":{"resolver":"https://pith.science/pith/JYPINM5VF4425DHKNOGMBVYNFP","bundle":"https://pith.science/pith/JYPINM5VF4425DHKNOGMBVYNFP/bundle.json","state":"https://pith.science/pith/JYPINM5VF4425DHKNOGMBVYNFP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JYPINM5VF4425DHKNOGMBVYNFP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:JYPINM5VF4425DHKNOGMBVYNFP","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":"420b23db6b9d177445ad2f68d6f858ef5b4ba88f0908aa807f013d02cb5d8160","cross_cats_sorted":["hep-ph","nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2013-08-12T12:53:48Z","title_canon_sha256":"d02a88595d466656f1e9c40e3af7cfcc83938460d2d89457c890af01768b89a7"},"schema_version":"1.0","source":{"id":"1308.2545","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1308.2545","created_at":"2026-05-18T03:08:46Z"},{"alias_kind":"arxiv_version","alias_value":"1308.2545v1","created_at":"2026-05-18T03:08:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1308.2545","created_at":"2026-05-18T03:08:46Z"},{"alias_kind":"pith_short_12","alias_value":"JYPINM5VF442","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_16","alias_value":"JYPINM5VF4425DHK","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_8","alias_value":"JYPINM5V","created_at":"2026-05-18T12:27:49Z"}],"graph_snapshots":[{"event_id":"sha256:6480aea2229313c437a11614cf52939106aa8863b5c92f6cc2dd86909e3a42c6","target":"graph","created_at":"2026-05-18T03:08:46Z","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":"There are generally two types of Wick contractions in lattice QCD calculations of a correlation function --- connected and disconnected ones. The disconnected contribution is difficult to calculate and noisy, thus it is often neglected. In the context of studying tetraquarks, hadronic molecules and meson-meson scattering, we show that whenever there are both connected and singly disconnected contractions, the singly disconnected part gives the leading order contribution, and thus should never be neglected. As an explicit example, we show that information about the scalar mesons sigma, f0(980),","authors_text":"Feng-Kun Guo, Liuming Liu, Ping Wang, Ulf-G. Mei{\\ss}ner","cross_cats":["hep-ph","nucl-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2013-08-12T12:53:48Z","title":"Tetraquarks, hadronic molecules, meson-meson scattering and disconnected contributions in lattice QCD"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1308.2545","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":"sha256:324716b4dcb4a0e163bfecc15ae91584b9c13de06e4e5943a14b6bcde0b7fd43","target":"record","created_at":"2026-05-18T03:08:46Z","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":"420b23db6b9d177445ad2f68d6f858ef5b4ba88f0908aa807f013d02cb5d8160","cross_cats_sorted":["hep-ph","nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2013-08-12T12:53:48Z","title_canon_sha256":"d02a88595d466656f1e9c40e3af7cfcc83938460d2d89457c890af01768b89a7"},"schema_version":"1.0","source":{"id":"1308.2545","kind":"arxiv","version":1}},"canonical_sha256":"4e1e86b3b52f39ae8cea6b8cc0d70d2bce96045f012e4e921aa925a8c145700f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4e1e86b3b52f39ae8cea6b8cc0d70d2bce96045f012e4e921aa925a8c145700f","first_computed_at":"2026-05-18T03:08:46.774220Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:08:46.774220Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1JZcs2FrlaiuYuif/qmCJEX1BG33XsRRkfqweun+s+U1IIihpONo2lzrd8i/2O1YhNov3fd9maDUKtEMQUPkCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:08:46.774660Z","signed_message":"canonical_sha256_bytes"},"source_id":"1308.2545","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:324716b4dcb4a0e163bfecc15ae91584b9c13de06e4e5943a14b6bcde0b7fd43","sha256:6480aea2229313c437a11614cf52939106aa8863b5c92f6cc2dd86909e3a42c6"],"state_sha256":"777d1a739e5a84f54bb4fc4e25f21d444f63c077407499743398234a4f7dd808"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cAGpslvqz5xAWGJE5T13wT9B6eKpmXqLTms46fENPhihSc10BGWhkyahyjEHhRMw3T8RMCKLWF4/a+7h9Hs6Cg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T21:57:31.723163Z","bundle_sha256":"9329da3a2e38f58ee8e05314772b9ccf3fdc563201959d2c21d7dd50d8b6c007"}}