{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:7FHNQCWYVKB2Y35GS632QU67JW","short_pith_number":"pith:7FHNQCWY","canonical_record":{"source":{"id":"1907.07079","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-07-16T15:45:30Z","cross_cats_sorted":["cond-mat.str-el","physics.comp-ph"],"title_canon_sha256":"c30d5625753748d4486491f4e9347631644172717a911c115a66d37829e0a6af","abstract_canon_sha256":"054bb664b722dc9483693538a29a5ca602a8691dfc202a52aa4da18eaaf0c291"},"schema_version":"1.0"},"canonical_sha256":"f94ed80ad8aa83ac6fa697b7a853df4d9692a6ef290a3587c8bf4ce6412b8104","source":{"kind":"arxiv","id":"1907.07079","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.07079","created_at":"2026-07-05T02:26:45Z"},{"alias_kind":"arxiv_version","alias_value":"1907.07079v2","created_at":"2026-07-05T02:26:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.07079","created_at":"2026-07-05T02:26:45Z"},{"alias_kind":"pith_short_12","alias_value":"7FHNQCWYVKB2","created_at":"2026-07-05T02:26:45Z"},{"alias_kind":"pith_short_16","alias_value":"7FHNQCWYVKB2Y35G","created_at":"2026-07-05T02:26:45Z"},{"alias_kind":"pith_short_8","alias_value":"7FHNQCWY","created_at":"2026-07-05T02:26:45Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:7FHNQCWYVKB2Y35GS632QU67JW","target":"record","payload":{"canonical_record":{"source":{"id":"1907.07079","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-07-16T15:45:30Z","cross_cats_sorted":["cond-mat.str-el","physics.comp-ph"],"title_canon_sha256":"c30d5625753748d4486491f4e9347631644172717a911c115a66d37829e0a6af","abstract_canon_sha256":"054bb664b722dc9483693538a29a5ca602a8691dfc202a52aa4da18eaaf0c291"},"schema_version":"1.0"},"canonical_sha256":"f94ed80ad8aa83ac6fa697b7a853df4d9692a6ef290a3587c8bf4ce6412b8104","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:26:45.791354Z","signature_b64":"bM3CX2Gdgv+2YgGs891UgjOB3jOSL1JaZjbgEjFQIaW0Uw6KI23M+ZEV0GARDINOjcZvAfK/bEvenXjOFBL+CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f94ed80ad8aa83ac6fa697b7a853df4d9692a6ef290a3587c8bf4ce6412b8104","last_reissued_at":"2026-07-05T02:26:45.790845Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:26:45.790845Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1907.07079","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T02:26:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WhN+AXM/yOQWVsp+O80EIqMtgDjVzkuLTc8Vzs9I4L3NwupRI6+opQ6FXGg7Nxrh56PBE7EajCzZ6X4t4hEnBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T21:29:04.063765Z"},"content_sha256":"f03e62bd36d99c7c4e43a8621566255b70398f4e63a0e32be460f8515d12820b","schema_version":"1.0","event_id":"sha256:f03e62bd36d99c7c4e43a8621566255b70398f4e63a0e32be460f8515d12820b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:7FHNQCWYVKB2Y35GS632QU67JW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Simulation methods for open quantum many-body systems","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el","physics.comp-ph"],"primary_cat":"quant-ph","authors_text":"Augustine Kshetrimayum, Hendrik Weimer, Rom\\'an Or\\'us","submitted_at":"2019-07-16T15:45:30Z","abstract_excerpt":"Coupling a quantum many-body system to an external environment dramatically changes its dynamics and offers novel possibilities not found in closed systems. Of special interest are the properties of the steady state of such open quantum many-body systems, as well as the relaxation dynamics towards the steady state. However, new computational tools are required to simulate open quantum many-body systems, as methods developed for closed systems cannot be readily applied. We review several approaches to simulate open many-body systems and point out the advances made in recent years towards the si"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.07079","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1907.07079/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T02:26:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"efizY/7qy/kJHLd6LsK6Wx+QCh+FST5DLvkYxEGvfeg5j0zv9yUtOUhUg5sBLC+byBjBpv2Z+JWjvnAmJb/cCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T21:29:04.064560Z"},"content_sha256":"80fd3fddd48b0eb9c3be5806227ef9c1993d578ff03fe3cae28feb5dc5a026ec","schema_version":"1.0","event_id":"sha256:80fd3fddd48b0eb9c3be5806227ef9c1993d578ff03fe3cae28feb5dc5a026ec"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7FHNQCWYVKB2Y35GS632QU67JW/bundle.json","state_url":"https://pith.science/pith/7FHNQCWYVKB2Y35GS632QU67JW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7FHNQCWYVKB2Y35GS632QU67JW/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":"2026-08-15T21:29:04Z","links":{"resolver":"https://pith.science/pith/7FHNQCWYVKB2Y35GS632QU67JW","bundle":"https://pith.science/pith/7FHNQCWYVKB2Y35GS632QU67JW/bundle.json","state":"https://pith.science/pith/7FHNQCWYVKB2Y35GS632QU67JW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7FHNQCWYVKB2Y35GS632QU67JW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:7FHNQCWYVKB2Y35GS632QU67JW","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":"054bb664b722dc9483693538a29a5ca602a8691dfc202a52aa4da18eaaf0c291","cross_cats_sorted":["cond-mat.str-el","physics.comp-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-07-16T15:45:30Z","title_canon_sha256":"c30d5625753748d4486491f4e9347631644172717a911c115a66d37829e0a6af"},"schema_version":"1.0","source":{"id":"1907.07079","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.07079","created_at":"2026-07-05T02:26:45Z"},{"alias_kind":"arxiv_version","alias_value":"1907.07079v2","created_at":"2026-07-05T02:26:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.07079","created_at":"2026-07-05T02:26:45Z"},{"alias_kind":"pith_short_12","alias_value":"7FHNQCWYVKB2","created_at":"2026-07-05T02:26:45Z"},{"alias_kind":"pith_short_16","alias_value":"7FHNQCWYVKB2Y35G","created_at":"2026-07-05T02:26:45Z"},{"alias_kind":"pith_short_8","alias_value":"7FHNQCWY","created_at":"2026-07-05T02:26:45Z"}],"graph_snapshots":[{"event_id":"sha256:80fd3fddd48b0eb9c3be5806227ef9c1993d578ff03fe3cae28feb5dc5a026ec","target":"graph","created_at":"2026-07-05T02:26:45Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/1907.07079/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Coupling a quantum many-body system to an external environment dramatically changes its dynamics and offers novel possibilities not found in closed systems. Of special interest are the properties of the steady state of such open quantum many-body systems, as well as the relaxation dynamics towards the steady state. However, new computational tools are required to simulate open quantum many-body systems, as methods developed for closed systems cannot be readily applied. We review several approaches to simulate open many-body systems and point out the advances made in recent years towards the si","authors_text":"Augustine Kshetrimayum, Hendrik Weimer, Rom\\'an Or\\'us","cross_cats":["cond-mat.str-el","physics.comp-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-07-16T15:45:30Z","title":"Simulation methods for open quantum many-body systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.07079","kind":"arxiv","version":2},"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:f03e62bd36d99c7c4e43a8621566255b70398f4e63a0e32be460f8515d12820b","target":"record","created_at":"2026-07-05T02:26:45Z","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":"054bb664b722dc9483693538a29a5ca602a8691dfc202a52aa4da18eaaf0c291","cross_cats_sorted":["cond-mat.str-el","physics.comp-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-07-16T15:45:30Z","title_canon_sha256":"c30d5625753748d4486491f4e9347631644172717a911c115a66d37829e0a6af"},"schema_version":"1.0","source":{"id":"1907.07079","kind":"arxiv","version":2}},"canonical_sha256":"f94ed80ad8aa83ac6fa697b7a853df4d9692a6ef290a3587c8bf4ce6412b8104","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f94ed80ad8aa83ac6fa697b7a853df4d9692a6ef290a3587c8bf4ce6412b8104","first_computed_at":"2026-07-05T02:26:45.790845Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:26:45.790845Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bM3CX2Gdgv+2YgGs891UgjOB3jOSL1JaZjbgEjFQIaW0Uw6KI23M+ZEV0GARDINOjcZvAfK/bEvenXjOFBL+CQ==","signature_status":"signed_v1","signed_at":"2026-07-05T02:26:45.791354Z","signed_message":"canonical_sha256_bytes"},"source_id":"1907.07079","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f03e62bd36d99c7c4e43a8621566255b70398f4e63a0e32be460f8515d12820b","sha256:80fd3fddd48b0eb9c3be5806227ef9c1993d578ff03fe3cae28feb5dc5a026ec"],"state_sha256":"935e7285095d3bacc9002620eb2dc1436ea13372f388f0309f63dd231b27049e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"s6QjawPmGfESdKvRG4mxfhRrHCDLbcIqVcVD7sRFJapbJ0nDfQi8jbCfrlt3h9eElN4N7SMOIKdhHOgRybI+Bg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-15T21:29:04.071152Z","bundle_sha256":"ee70c607b2322ddd100a7559a9b73f32a9d0f68b6ac8d6588e90f09a694ed71c"}}