{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:ICILNM6FU52JOZ7N35CJW4WM55","short_pith_number":"pith:ICILNM6F","canonical_record":{"source":{"id":"1703.08411","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-03-24T13:56:50Z","cross_cats_sorted":["cond-mat.stat-mech"],"title_canon_sha256":"fa9be645c2e656039b5a19f0fe9619636290644ac3a14175759d550fee94c994","abstract_canon_sha256":"4b0e092f397a58b2576f4172a6dc389c856fea2b7f47a7a985209499a44f5633"},"schema_version":"1.0"},"canonical_sha256":"4090b6b3c5a7749767eddf449b72ccef6c5737011a91b7f93080cc14fc48b15a","source":{"kind":"arxiv","id":"1703.08411","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.08411","created_at":"2026-05-18T00:35:55Z"},{"alias_kind":"arxiv_version","alias_value":"1703.08411v3","created_at":"2026-05-18T00:35:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.08411","created_at":"2026-05-18T00:35:55Z"},{"alias_kind":"pith_short_12","alias_value":"ICILNM6FU52J","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_16","alias_value":"ICILNM6FU52JOZ7N","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_8","alias_value":"ICILNM6F","created_at":"2026-05-18T12:31:21Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:ICILNM6FU52JOZ7N35CJW4WM55","target":"record","payload":{"canonical_record":{"source":{"id":"1703.08411","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-03-24T13:56:50Z","cross_cats_sorted":["cond-mat.stat-mech"],"title_canon_sha256":"fa9be645c2e656039b5a19f0fe9619636290644ac3a14175759d550fee94c994","abstract_canon_sha256":"4b0e092f397a58b2576f4172a6dc389c856fea2b7f47a7a985209499a44f5633"},"schema_version":"1.0"},"canonical_sha256":"4090b6b3c5a7749767eddf449b72ccef6c5737011a91b7f93080cc14fc48b15a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:35:55.303241Z","signature_b64":"GEDh81104EgdSSHVT+A1+l63di35bmP1EQ90tSyOVCedIk+1d8XBNNjFuW/ipqlWE0U0u+38V3LZ93wYkEwDDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4090b6b3c5a7749767eddf449b72ccef6c5737011a91b7f93080cc14fc48b15a","last_reissued_at":"2026-05-18T00:35:55.302876Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:35:55.302876Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1703.08411","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:35:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Fd5C0tyV/HGr6SuWT+z21h9HZcvqzld0SzwRH2Ctm70AhIgoha2pD7D14kGAVySVemqRfFyni5Lg7rkmGDdBCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T18:41:07.982399Z"},"content_sha256":"d2f7753adfcdbfadfc3438858b8e9c0cbca28af4385560d9947a319c7ebde3a2","schema_version":"1.0","event_id":"sha256:d2f7753adfcdbfadfc3438858b8e9c0cbca28af4385560d9947a319c7ebde3a2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:ICILNM6FU52JOZ7N35CJW4WM55","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Density-of-states of many-body quantum systems from tensor networks","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.stat-mech"],"primary_cat":"quant-ph","authors_text":"Fabian Schrodi, Ferdinand Tschirsich, Pietro Silvi, Rosario Fazio, Simone Montangero","submitted_at":"2017-03-24T13:56:50Z","abstract_excerpt":"We present a technique to compute the microcanonical thermodynamical properties of a manybody quantum system using tensor networks. The Density Of States (DOS), and more general spectral properties, are evaluated by means of a Hubbard-Stratonovich transformation performed on top of a real-time evolution, which is carried out via numerical methods based on tensor networks. As a consequence, the free energy and thermal averages can be also calculated. We test this approach on the one-dimensional Ising and Fermi-Hubbard models. Using matrix product states, we show that the thermodynamical quantit"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.08411","kind":"arxiv","version":3},"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":"2026-05-18T00:35:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"F3x5xztsDwpflzqvefjzaKa+snRIxaxZ1jQkNzv14BgUhc17JBtGYd7sbkRJuhIGQxgE3schbgDziMO4LO/SCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T18:41:07.983040Z"},"content_sha256":"659d5f87ce77f576adf1147796e73fc439aae39765da7d78a187d458dde36496","schema_version":"1.0","event_id":"sha256:659d5f87ce77f576adf1147796e73fc439aae39765da7d78a187d458dde36496"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ICILNM6FU52JOZ7N35CJW4WM55/bundle.json","state_url":"https://pith.science/pith/ICILNM6FU52JOZ7N35CJW4WM55/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ICILNM6FU52JOZ7N35CJW4WM55/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":"2026-05-26T18:41:07Z","links":{"resolver":"https://pith.science/pith/ICILNM6FU52JOZ7N35CJW4WM55","bundle":"https://pith.science/pith/ICILNM6FU52JOZ7N35CJW4WM55/bundle.json","state":"https://pith.science/pith/ICILNM6FU52JOZ7N35CJW4WM55/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ICILNM6FU52JOZ7N35CJW4WM55/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:ICILNM6FU52JOZ7N35CJW4WM55","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":"4b0e092f397a58b2576f4172a6dc389c856fea2b7f47a7a985209499a44f5633","cross_cats_sorted":["cond-mat.stat-mech"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-03-24T13:56:50Z","title_canon_sha256":"fa9be645c2e656039b5a19f0fe9619636290644ac3a14175759d550fee94c994"},"schema_version":"1.0","source":{"id":"1703.08411","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.08411","created_at":"2026-05-18T00:35:55Z"},{"alias_kind":"arxiv_version","alias_value":"1703.08411v3","created_at":"2026-05-18T00:35:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.08411","created_at":"2026-05-18T00:35:55Z"},{"alias_kind":"pith_short_12","alias_value":"ICILNM6FU52J","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_16","alias_value":"ICILNM6FU52JOZ7N","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_8","alias_value":"ICILNM6F","created_at":"2026-05-18T12:31:21Z"}],"graph_snapshots":[{"event_id":"sha256:659d5f87ce77f576adf1147796e73fc439aae39765da7d78a187d458dde36496","target":"graph","created_at":"2026-05-18T00:35:55Z","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 technique to compute the microcanonical thermodynamical properties of a manybody quantum system using tensor networks. The Density Of States (DOS), and more general spectral properties, are evaluated by means of a Hubbard-Stratonovich transformation performed on top of a real-time evolution, which is carried out via numerical methods based on tensor networks. As a consequence, the free energy and thermal averages can be also calculated. We test this approach on the one-dimensional Ising and Fermi-Hubbard models. Using matrix product states, we show that the thermodynamical quantit","authors_text":"Fabian Schrodi, Ferdinand Tschirsich, Pietro Silvi, Rosario Fazio, Simone Montangero","cross_cats":["cond-mat.stat-mech"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-03-24T13:56:50Z","title":"Density-of-states of many-body quantum systems from tensor networks"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.08411","kind":"arxiv","version":3},"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:d2f7753adfcdbfadfc3438858b8e9c0cbca28af4385560d9947a319c7ebde3a2","target":"record","created_at":"2026-05-18T00:35:55Z","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":"4b0e092f397a58b2576f4172a6dc389c856fea2b7f47a7a985209499a44f5633","cross_cats_sorted":["cond-mat.stat-mech"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-03-24T13:56:50Z","title_canon_sha256":"fa9be645c2e656039b5a19f0fe9619636290644ac3a14175759d550fee94c994"},"schema_version":"1.0","source":{"id":"1703.08411","kind":"arxiv","version":3}},"canonical_sha256":"4090b6b3c5a7749767eddf449b72ccef6c5737011a91b7f93080cc14fc48b15a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4090b6b3c5a7749767eddf449b72ccef6c5737011a91b7f93080cc14fc48b15a","first_computed_at":"2026-05-18T00:35:55.302876Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:35:55.302876Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"GEDh81104EgdSSHVT+A1+l63di35bmP1EQ90tSyOVCedIk+1d8XBNNjFuW/ipqlWE0U0u+38V3LZ93wYkEwDDw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:35:55.303241Z","signed_message":"canonical_sha256_bytes"},"source_id":"1703.08411","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d2f7753adfcdbfadfc3438858b8e9c0cbca28af4385560d9947a319c7ebde3a2","sha256:659d5f87ce77f576adf1147796e73fc439aae39765da7d78a187d458dde36496"],"state_sha256":"16428af039bbe65f2c00dc1bbc21fc303f043037f309fd90f02621b39c2d3cd3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ye0J8+yWXSDu1o48KoaN7zix6bIu7LSgfW+dPz4yKwwDm1otImL31NouqzXLlSdD11FdknA31/tTrsE2sfX1DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T18:41:07.986576Z","bundle_sha256":"25427336d17b7a1c7af5a94233a91454ea923889d5ffe2016b1a87807b9034d7"}}