{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:WQSOHI6WNPAHAELUP7MS7L4EAY","short_pith_number":"pith:WQSOHI6W","canonical_record":{"source":{"id":"1503.01399","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2015-03-04T17:57:53Z","cross_cats_sorted":[],"title_canon_sha256":"2108a9f3955809293f2dfb8dff5cae13c5583e7b73a736e099ae6e9c396a6c85","abstract_canon_sha256":"05ef8ef3919e817f4d4fa651c288e6ba6525fb17c0b8b89fa6eac787412f6009"},"schema_version":"1.0"},"canonical_sha256":"b424e3a3d66bc07011747fd92faf840615357d006771e6be5498b6bd4cb8397c","source":{"kind":"arxiv","id":"1503.01399","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.01399","created_at":"2026-05-18T01:40:53Z"},{"alias_kind":"arxiv_version","alias_value":"1503.01399v1","created_at":"2026-05-18T01:40:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.01399","created_at":"2026-05-18T01:40:53Z"},{"alias_kind":"pith_short_12","alias_value":"WQSOHI6WNPAH","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_16","alias_value":"WQSOHI6WNPAHAELU","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_8","alias_value":"WQSOHI6W","created_at":"2026-05-18T12:29:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:WQSOHI6WNPAHAELUP7MS7L4EAY","target":"record","payload":{"canonical_record":{"source":{"id":"1503.01399","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2015-03-04T17:57:53Z","cross_cats_sorted":[],"title_canon_sha256":"2108a9f3955809293f2dfb8dff5cae13c5583e7b73a736e099ae6e9c396a6c85","abstract_canon_sha256":"05ef8ef3919e817f4d4fa651c288e6ba6525fb17c0b8b89fa6eac787412f6009"},"schema_version":"1.0"},"canonical_sha256":"b424e3a3d66bc07011747fd92faf840615357d006771e6be5498b6bd4cb8397c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:40:53.414084Z","signature_b64":"g26L2GE5K3r/enZ94HbREXc68iz2ZbW1UJLhgflc3khq5xIuL419EcAiGUrvrB134myOZUuPQrpfBsf51wprAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b424e3a3d66bc07011747fd92faf840615357d006771e6be5498b6bd4cb8397c","last_reissued_at":"2026-05-18T01:40:53.413429Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:40:53.413429Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1503.01399","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":"2026-05-18T01:40:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nqVteApoLUm9CPDEMKlwLVYnA/Gk2ksVj/82pviUC3IQHsiyACl6eTmJYX0afShfcj/2PoHBkdLBhj64SmyxCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-20T06:22:05.035013Z"},"content_sha256":"63cae517ac4cb491f7eb07e3d57774405b134a51c524fb32c1f98ae788a156d7","schema_version":"1.0","event_id":"sha256:63cae517ac4cb491f7eb07e3d57774405b134a51c524fb32c1f98ae788a156d7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:WQSOHI6WNPAHAELUP7MS7L4EAY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Quantum Monte Carlo estimation of complex-time correlations for the study of the ground-state dynamic structure function","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.stat-mech","authors_text":"Ferran Mazzanti, Joaquim Casulleras, Jordi Boronat, Riccardo Rota","submitted_at":"2015-03-04T17:57:53Z","abstract_excerpt":"We present a method based on the Path Integral Monte Carlo formalism for the calculation of ground-state time correlation functions in quantum systems. The key point of the method is the consideration of time as a complex variable whose phase $\\delta$ acts as an adjustable parameter. By using high-order approximations for the quantum propagator, it is possible to obtain Monte Carlo data all the way from purely imaginary time to $\\delta$ values near the limit of real time. As a consequence, it is possible to infer accurately the spectral functions using simple inversion algorithms. We test this"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.01399","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":"2026-05-18T01:40:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qRXv0LhizUlnDhcdkmMhsvA2yKwu8xsASHZNObPCSB2OSOE0XukONukh6YwDPIM/nGB1mDry/6l9IXDOtm2XDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-20T06:22:05.035377Z"},"content_sha256":"019ab5f84695ab5c20284b971b17bab26cfdf652d8993c6fba36bcf08170fe0b","schema_version":"1.0","event_id":"sha256:019ab5f84695ab5c20284b971b17bab26cfdf652d8993c6fba36bcf08170fe0b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WQSOHI6WNPAHAELUP7MS7L4EAY/bundle.json","state_url":"https://pith.science/pith/WQSOHI6WNPAHAELUP7MS7L4EAY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WQSOHI6WNPAHAELUP7MS7L4EAY/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":"2026-06-20T06:22:05Z","links":{"resolver":"https://pith.science/pith/WQSOHI6WNPAHAELUP7MS7L4EAY","bundle":"https://pith.science/pith/WQSOHI6WNPAHAELUP7MS7L4EAY/bundle.json","state":"https://pith.science/pith/WQSOHI6WNPAHAELUP7MS7L4EAY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WQSOHI6WNPAHAELUP7MS7L4EAY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:WQSOHI6WNPAHAELUP7MS7L4EAY","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":"05ef8ef3919e817f4d4fa651c288e6ba6525fb17c0b8b89fa6eac787412f6009","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2015-03-04T17:57:53Z","title_canon_sha256":"2108a9f3955809293f2dfb8dff5cae13c5583e7b73a736e099ae6e9c396a6c85"},"schema_version":"1.0","source":{"id":"1503.01399","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.01399","created_at":"2026-05-18T01:40:53Z"},{"alias_kind":"arxiv_version","alias_value":"1503.01399v1","created_at":"2026-05-18T01:40:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.01399","created_at":"2026-05-18T01:40:53Z"},{"alias_kind":"pith_short_12","alias_value":"WQSOHI6WNPAH","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_16","alias_value":"WQSOHI6WNPAHAELU","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_8","alias_value":"WQSOHI6W","created_at":"2026-05-18T12:29:47Z"}],"graph_snapshots":[{"event_id":"sha256:019ab5f84695ab5c20284b971b17bab26cfdf652d8993c6fba36bcf08170fe0b","target":"graph","created_at":"2026-05-18T01:40:53Z","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 a method based on the Path Integral Monte Carlo formalism for the calculation of ground-state time correlation functions in quantum systems. The key point of the method is the consideration of time as a complex variable whose phase $\\delta$ acts as an adjustable parameter. By using high-order approximations for the quantum propagator, it is possible to obtain Monte Carlo data all the way from purely imaginary time to $\\delta$ values near the limit of real time. As a consequence, it is possible to infer accurately the spectral functions using simple inversion algorithms. We test this","authors_text":"Ferran Mazzanti, Joaquim Casulleras, Jordi Boronat, Riccardo Rota","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2015-03-04T17:57:53Z","title":"Quantum Monte Carlo estimation of complex-time correlations for the study of the ground-state dynamic structure function"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.01399","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":"sha256:63cae517ac4cb491f7eb07e3d57774405b134a51c524fb32c1f98ae788a156d7","target":"record","created_at":"2026-05-18T01:40:53Z","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":"05ef8ef3919e817f4d4fa651c288e6ba6525fb17c0b8b89fa6eac787412f6009","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2015-03-04T17:57:53Z","title_canon_sha256":"2108a9f3955809293f2dfb8dff5cae13c5583e7b73a736e099ae6e9c396a6c85"},"schema_version":"1.0","source":{"id":"1503.01399","kind":"arxiv","version":1}},"canonical_sha256":"b424e3a3d66bc07011747fd92faf840615357d006771e6be5498b6bd4cb8397c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b424e3a3d66bc07011747fd92faf840615357d006771e6be5498b6bd4cb8397c","first_computed_at":"2026-05-18T01:40:53.413429Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:40:53.413429Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"g26L2GE5K3r/enZ94HbREXc68iz2ZbW1UJLhgflc3khq5xIuL419EcAiGUrvrB134myOZUuPQrpfBsf51wprAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:40:53.414084Z","signed_message":"canonical_sha256_bytes"},"source_id":"1503.01399","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:63cae517ac4cb491f7eb07e3d57774405b134a51c524fb32c1f98ae788a156d7","sha256:019ab5f84695ab5c20284b971b17bab26cfdf652d8993c6fba36bcf08170fe0b"],"state_sha256":"be04d3ff3480b1307a3ce80352d5609fd0a355b8ca3a3984c12f9086955806af"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aijmS9o5X4N2rPQYHvnGci3pFMuprQl+BTn8DYsYYbGs3nLpUghIoD2RWqL5cAoX2w8B8mKRHmVmMEY7mwRmCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-20T06:22:05.037324Z","bundle_sha256":"f03b435f52a9a9184011de0e5042d457f9ecf1c02cf16bf28fcfb801ffdfac01"}}