{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:PBFZTCBB32D55IT4FZKPCITYT6","short_pith_number":"pith:PBFZTCBB","canonical_record":{"source":{"id":"1307.6267","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2013-07-23T23:37:41Z","cross_cats_sorted":[],"title_canon_sha256":"c3661c9257eaac81e686d2f0838534933b8606ee7be12ae30c861b3a2ae09766","abstract_canon_sha256":"d46637ae06523ddc6a7e3197244eb6a629c964a8efba65571ff9087edfa5e5a6"},"schema_version":"1.0"},"canonical_sha256":"784b998821de87dea27c2e54f122789f8da001a686e6d6de217fcd7932f3daae","source":{"kind":"arxiv","id":"1307.6267","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.6267","created_at":"2026-05-18T03:17:43Z"},{"alias_kind":"arxiv_version","alias_value":"1307.6267v1","created_at":"2026-05-18T03:17:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.6267","created_at":"2026-05-18T03:17:43Z"},{"alias_kind":"pith_short_12","alias_value":"PBFZTCBB32D5","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_16","alias_value":"PBFZTCBB32D55IT4","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_8","alias_value":"PBFZTCBB","created_at":"2026-05-18T12:27:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:PBFZTCBB32D55IT4FZKPCITYT6","target":"record","payload":{"canonical_record":{"source":{"id":"1307.6267","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2013-07-23T23:37:41Z","cross_cats_sorted":[],"title_canon_sha256":"c3661c9257eaac81e686d2f0838534933b8606ee7be12ae30c861b3a2ae09766","abstract_canon_sha256":"d46637ae06523ddc6a7e3197244eb6a629c964a8efba65571ff9087edfa5e5a6"},"schema_version":"1.0"},"canonical_sha256":"784b998821de87dea27c2e54f122789f8da001a686e6d6de217fcd7932f3daae","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:17:43.852829Z","signature_b64":"f6+1gjmm1tySEne8c1pHVFW2pL/k3BQXdFJKpVmZoaxDfYMIv7EojODr94csiQV4aOAmcvCJmJsaSRxxYvAmCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"784b998821de87dea27c2e54f122789f8da001a686e6d6de217fcd7932f3daae","last_reissued_at":"2026-05-18T03:17:43.851880Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:17:43.851880Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1307.6267","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":"2026-05-18T03:17:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+3aigLnGnRsz2npRq9oNLbvX53ccB/rqurORLlSWia4jkfH2vYvgJQTUDx6H8FJgkR9WZaU1HXnENzhT6WkBBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T02:10:14.015520Z"},"content_sha256":"292776b1dc1183be8fe0180b81ae8daf0b2cd779d821e51a11271fd29bd239d0","schema_version":"1.0","event_id":"sha256:292776b1dc1183be8fe0180b81ae8daf0b2cd779d821e51a11271fd29bd239d0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:PBFZTCBB32D55IT4FZKPCITYT6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Exact Real Time Dynamics of Quantum Spin Systems Using the Positive-P Representation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.stat-mech","authors_text":"Erik Sorensen, Ray Ng","submitted_at":"2013-07-23T23:37:41Z","abstract_excerpt":"We discuss a scheme for simulating the real time quantum quench dynamics of interacting quantum spin systems within the positive-P formalism. As model systems we study the transverse field Ising model as well as the Heisenberg model undergoing a quench away from the classical ferromagnetic ordered state and antiferromagnetic Neel state, depending on the sign of the Heisenberg exchange interaction. The connection to the positive-P formalism as it is used in quantum optics is established by mapping the spin operators on to Schwinger bosons. In doing so, the dynamics of the interacting quantum sp"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.6267","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":"2026-05-18T03:17:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"a2+NhiB16khChBwOB4B9juzhOcNVidZK3XD/HM+UGzeOBN0n2F+ie9/cRnJJBHHUnEXEtlN/CkCPu1h4ateXDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T02:10:14.015876Z"},"content_sha256":"b6e3957b4ee79d25a0caff69c516c8df911fc94464fa1109e0a714e7bce2f808","schema_version":"1.0","event_id":"sha256:b6e3957b4ee79d25a0caff69c516c8df911fc94464fa1109e0a714e7bce2f808"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PBFZTCBB32D55IT4FZKPCITYT6/bundle.json","state_url":"https://pith.science/pith/PBFZTCBB32D55IT4FZKPCITYT6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PBFZTCBB32D55IT4FZKPCITYT6/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":"2026-05-28T02:10:14Z","links":{"resolver":"https://pith.science/pith/PBFZTCBB32D55IT4FZKPCITYT6","bundle":"https://pith.science/pith/PBFZTCBB32D55IT4FZKPCITYT6/bundle.json","state":"https://pith.science/pith/PBFZTCBB32D55IT4FZKPCITYT6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PBFZTCBB32D55IT4FZKPCITYT6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:PBFZTCBB32D55IT4FZKPCITYT6","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":"d46637ae06523ddc6a7e3197244eb6a629c964a8efba65571ff9087edfa5e5a6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2013-07-23T23:37:41Z","title_canon_sha256":"c3661c9257eaac81e686d2f0838534933b8606ee7be12ae30c861b3a2ae09766"},"schema_version":"1.0","source":{"id":"1307.6267","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.6267","created_at":"2026-05-18T03:17:43Z"},{"alias_kind":"arxiv_version","alias_value":"1307.6267v1","created_at":"2026-05-18T03:17:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.6267","created_at":"2026-05-18T03:17:43Z"},{"alias_kind":"pith_short_12","alias_value":"PBFZTCBB32D5","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_16","alias_value":"PBFZTCBB32D55IT4","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_8","alias_value":"PBFZTCBB","created_at":"2026-05-18T12:27:54Z"}],"graph_snapshots":[{"event_id":"sha256:b6e3957b4ee79d25a0caff69c516c8df911fc94464fa1109e0a714e7bce2f808","target":"graph","created_at":"2026-05-18T03:17:43Z","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 scheme for simulating the real time quantum quench dynamics of interacting quantum spin systems within the positive-P formalism. As model systems we study the transverse field Ising model as well as the Heisenberg model undergoing a quench away from the classical ferromagnetic ordered state and antiferromagnetic Neel state, depending on the sign of the Heisenberg exchange interaction. The connection to the positive-P formalism as it is used in quantum optics is established by mapping the spin operators on to Schwinger bosons. In doing so, the dynamics of the interacting quantum sp","authors_text":"Erik Sorensen, Ray Ng","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2013-07-23T23:37:41Z","title":"Exact Real Time Dynamics of Quantum Spin Systems Using the Positive-P Representation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.6267","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":"sha256:292776b1dc1183be8fe0180b81ae8daf0b2cd779d821e51a11271fd29bd239d0","target":"record","created_at":"2026-05-18T03:17:43Z","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":"d46637ae06523ddc6a7e3197244eb6a629c964a8efba65571ff9087edfa5e5a6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2013-07-23T23:37:41Z","title_canon_sha256":"c3661c9257eaac81e686d2f0838534933b8606ee7be12ae30c861b3a2ae09766"},"schema_version":"1.0","source":{"id":"1307.6267","kind":"arxiv","version":1}},"canonical_sha256":"784b998821de87dea27c2e54f122789f8da001a686e6d6de217fcd7932f3daae","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"784b998821de87dea27c2e54f122789f8da001a686e6d6de217fcd7932f3daae","first_computed_at":"2026-05-18T03:17:43.851880Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:17:43.851880Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"f6+1gjmm1tySEne8c1pHVFW2pL/k3BQXdFJKpVmZoaxDfYMIv7EojODr94csiQV4aOAmcvCJmJsaSRxxYvAmCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:17:43.852829Z","signed_message":"canonical_sha256_bytes"},"source_id":"1307.6267","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:292776b1dc1183be8fe0180b81ae8daf0b2cd779d821e51a11271fd29bd239d0","sha256:b6e3957b4ee79d25a0caff69c516c8df911fc94464fa1109e0a714e7bce2f808"],"state_sha256":"2428ccc469834510f68dfad4a1e692214efc65316ea20152ebb1f6cac320ac6e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zSbEam8qBjMN1/SIa4CHmNH7A1BCxt1qdSc2oGPoz6Ko2d/yXMr7A+QtZh0LtNM79fst0vQJ6PSUcFwbvSJMAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T02:10:14.018029Z","bundle_sha256":"32161f9f2f1023bb0d7b955567e4bbc65655424f5bd851438db31fe18fba7be8"}}