{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:43SKTSUKYSNKFMZ3GBM66C7QBW","short_pith_number":"pith:43SKTSUK","canonical_record":{"source":{"id":"1311.3643","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2013-11-14T20:14:54Z","cross_cats_sorted":["hep-ph"],"title_canon_sha256":"0ff23ba1b82839a2d789e34caf6fd5941b9ebc9770e1ab11743ed857096988d1","abstract_canon_sha256":"41c5b4ee8c9cf42d9c24787f630de464b9ffd8eff80f82d3a7955c38ac27ca70"},"schema_version":"1.0"},"canonical_sha256":"e6e4a9ca8ac49aa2b33b3059ef0bf00dba2dd45f2054a0be9ab34ba0fd11eb54","source":{"kind":"arxiv","id":"1311.3643","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1311.3643","created_at":"2026-05-18T03:07:04Z"},{"alias_kind":"arxiv_version","alias_value":"1311.3643v1","created_at":"2026-05-18T03:07:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1311.3643","created_at":"2026-05-18T03:07:04Z"},{"alias_kind":"pith_short_12","alias_value":"43SKTSUKYSNK","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_16","alias_value":"43SKTSUKYSNKFMZ3","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_8","alias_value":"43SKTSUK","created_at":"2026-05-18T12:27:32Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:43SKTSUKYSNKFMZ3GBM66C7QBW","target":"record","payload":{"canonical_record":{"source":{"id":"1311.3643","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2013-11-14T20:14:54Z","cross_cats_sorted":["hep-ph"],"title_canon_sha256":"0ff23ba1b82839a2d789e34caf6fd5941b9ebc9770e1ab11743ed857096988d1","abstract_canon_sha256":"41c5b4ee8c9cf42d9c24787f630de464b9ffd8eff80f82d3a7955c38ac27ca70"},"schema_version":"1.0"},"canonical_sha256":"e6e4a9ca8ac49aa2b33b3059ef0bf00dba2dd45f2054a0be9ab34ba0fd11eb54","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:07:04.252323Z","signature_b64":"z23uud23zTO9alqyvFThCQPaoVkc29yZwglSDMQYEJxVOL/q2GtSdc34kywQa/A2lB1OOhUtlLsvmjVg46ZhBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e6e4a9ca8ac49aa2b33b3059ef0bf00dba2dd45f2054a0be9ab34ba0fd11eb54","last_reissued_at":"2026-05-18T03:07:04.251810Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:07:04.251810Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1311.3643","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":"2026-05-18T03:07:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VCKE5O+P+A9MZe9VLptktPAF36h3Pj6mub73fpv9Vr5h1qUpZ4TML9fYaGvPb9GHpC1tk36fiTvrAFHKAwBZDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T18:29:45.015335Z"},"content_sha256":"a56cbeb0cce6e00ed0779021bfeba4fd4d64405d8db03d00dac8d85b20a95707","schema_version":"1.0","event_id":"sha256:a56cbeb0cce6e00ed0779021bfeba4fd4d64405d8db03d00dac8d85b20a95707"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:43SKTSUKYSNKFMZ3GBM66C7QBW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spectral densities from the lattice","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph"],"primary_cat":"hep-lat","authors_text":"David Dudal, Orlando Oliveira, Paulo J. Silva","submitted_at":"2013-11-14T20:14:54Z","abstract_excerpt":"We discuss a method to extract the K\\\"all\\'{e}n-Lehmann spectral density of a particle (be it elementary or bound state) propagator by means of 4d lattice data. We employ a linear regularization strategy, commonly known as the Tikhonov method with Morozov discrepancy principle. An important virtue over the popular maximum entropy method is the possibility to also probe unphysical spectral densities, as, for example, of a confined gluon. We apply our proposal to the SU(3) glue sector."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1311.3643","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":"2026-05-18T03:07:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"D3Lcigxz2lnxpnppCSYENXqVP1h5CyVUkbx591CG3lbBVZxchXzawgwrLf9ZlbQV2ZtC6iNYvLU2wLAjhciuAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T18:29:45.015720Z"},"content_sha256":"9fb1304c95ad5bb1fdab878f20d0686c01bda6d69886b42e7aa3362c469fa954","schema_version":"1.0","event_id":"sha256:9fb1304c95ad5bb1fdab878f20d0686c01bda6d69886b42e7aa3362c469fa954"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/43SKTSUKYSNKFMZ3GBM66C7QBW/bundle.json","state_url":"https://pith.science/pith/43SKTSUKYSNKFMZ3GBM66C7QBW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/43SKTSUKYSNKFMZ3GBM66C7QBW/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":"2026-06-27T18:29:45Z","links":{"resolver":"https://pith.science/pith/43SKTSUKYSNKFMZ3GBM66C7QBW","bundle":"https://pith.science/pith/43SKTSUKYSNKFMZ3GBM66C7QBW/bundle.json","state":"https://pith.science/pith/43SKTSUKYSNKFMZ3GBM66C7QBW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/43SKTSUKYSNKFMZ3GBM66C7QBW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:43SKTSUKYSNKFMZ3GBM66C7QBW","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":"41c5b4ee8c9cf42d9c24787f630de464b9ffd8eff80f82d3a7955c38ac27ca70","cross_cats_sorted":["hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2013-11-14T20:14:54Z","title_canon_sha256":"0ff23ba1b82839a2d789e34caf6fd5941b9ebc9770e1ab11743ed857096988d1"},"schema_version":"1.0","source":{"id":"1311.3643","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1311.3643","created_at":"2026-05-18T03:07:04Z"},{"alias_kind":"arxiv_version","alias_value":"1311.3643v1","created_at":"2026-05-18T03:07:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1311.3643","created_at":"2026-05-18T03:07:04Z"},{"alias_kind":"pith_short_12","alias_value":"43SKTSUKYSNK","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_16","alias_value":"43SKTSUKYSNKFMZ3","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_8","alias_value":"43SKTSUK","created_at":"2026-05-18T12:27:32Z"}],"graph_snapshots":[{"event_id":"sha256:9fb1304c95ad5bb1fdab878f20d0686c01bda6d69886b42e7aa3362c469fa954","target":"graph","created_at":"2026-05-18T03:07:04Z","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 discuss a method to extract the K\\\"all\\'{e}n-Lehmann spectral density of a particle (be it elementary or bound state) propagator by means of 4d lattice data. We employ a linear regularization strategy, commonly known as the Tikhonov method with Morozov discrepancy principle. An important virtue over the popular maximum entropy method is the possibility to also probe unphysical spectral densities, as, for example, of a confined gluon. We apply our proposal to the SU(3) glue sector.","authors_text":"David Dudal, Orlando Oliveira, Paulo J. Silva","cross_cats":["hep-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2013-11-14T20:14:54Z","title":"Spectral densities from the lattice"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1311.3643","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:a56cbeb0cce6e00ed0779021bfeba4fd4d64405d8db03d00dac8d85b20a95707","target":"record","created_at":"2026-05-18T03:07:04Z","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":"41c5b4ee8c9cf42d9c24787f630de464b9ffd8eff80f82d3a7955c38ac27ca70","cross_cats_sorted":["hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2013-11-14T20:14:54Z","title_canon_sha256":"0ff23ba1b82839a2d789e34caf6fd5941b9ebc9770e1ab11743ed857096988d1"},"schema_version":"1.0","source":{"id":"1311.3643","kind":"arxiv","version":1}},"canonical_sha256":"e6e4a9ca8ac49aa2b33b3059ef0bf00dba2dd45f2054a0be9ab34ba0fd11eb54","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e6e4a9ca8ac49aa2b33b3059ef0bf00dba2dd45f2054a0be9ab34ba0fd11eb54","first_computed_at":"2026-05-18T03:07:04.251810Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:07:04.251810Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"z23uud23zTO9alqyvFThCQPaoVkc29yZwglSDMQYEJxVOL/q2GtSdc34kywQa/A2lB1OOhUtlLsvmjVg46ZhBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:07:04.252323Z","signed_message":"canonical_sha256_bytes"},"source_id":"1311.3643","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a56cbeb0cce6e00ed0779021bfeba4fd4d64405d8db03d00dac8d85b20a95707","sha256:9fb1304c95ad5bb1fdab878f20d0686c01bda6d69886b42e7aa3362c469fa954"],"state_sha256":"89b2d316670f2bb44b691d1d313cae0caba72df6885bef398833aad88eef43bf"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cHSeZf5gB5ep8nsK+iLiRe0BC/CCgzdIriOwdqeJ54XI0+xrs2psplEX8u84AIwDwqIBhCNnNo56Vqmeg283BA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-27T18:29:45.017695Z","bundle_sha256":"1188436ebc68b8fbf18369f9c8eda707c7609e64fc2a267e959adba1db71e30f"}}