{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:BSVS5UZPAURUR25547HW3AAWIG","short_pith_number":"pith:BSVS5UZP","canonical_record":{"source":{"id":"1504.00220","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-04-01T13:16:58Z","cross_cats_sorted":["cond-mat.other"],"title_canon_sha256":"89d29bb9d181709e2e61cd2054241b3eebc766ac69f843f70330ed0abe762c2f","abstract_canon_sha256":"f4580fe441ae33acdc825bc345f82b72b8acff26f8ced44cf7e6998de7d7ba54"},"schema_version":"1.0"},"canonical_sha256":"0cab2ed32f052348ebbde7cf6d801641802915f9fbde92d5ed742cd56e325aef","source":{"kind":"arxiv","id":"1504.00220","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1504.00220","created_at":"2026-05-18T01:10:33Z"},{"alias_kind":"arxiv_version","alias_value":"1504.00220v1","created_at":"2026-05-18T01:10:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1504.00220","created_at":"2026-05-18T01:10:33Z"},{"alias_kind":"pith_short_12","alias_value":"BSVS5UZPAURU","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_16","alias_value":"BSVS5UZPAURUR255","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_8","alias_value":"BSVS5UZP","created_at":"2026-05-18T12:29:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:BSVS5UZPAURUR25547HW3AAWIG","target":"record","payload":{"canonical_record":{"source":{"id":"1504.00220","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-04-01T13:16:58Z","cross_cats_sorted":["cond-mat.other"],"title_canon_sha256":"89d29bb9d181709e2e61cd2054241b3eebc766ac69f843f70330ed0abe762c2f","abstract_canon_sha256":"f4580fe441ae33acdc825bc345f82b72b8acff26f8ced44cf7e6998de7d7ba54"},"schema_version":"1.0"},"canonical_sha256":"0cab2ed32f052348ebbde7cf6d801641802915f9fbde92d5ed742cd56e325aef","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:10:33.459730Z","signature_b64":"/Kmx4KHYxMPNOor9gV0N3iO+ihIyxY5H5f84JsGQhTU+f1+w8rGgHt8JTcfbZgxkyRkz7LsjhVa/1ICJpSwAAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0cab2ed32f052348ebbde7cf6d801641802915f9fbde92d5ed742cd56e325aef","last_reissued_at":"2026-05-18T01:10:33.459085Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:10:33.459085Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1504.00220","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":"2026-05-18T01:10:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aX6YqtMdhI8m3NHdzzuFOM0+8XZK7W1hpQz9O4lBcQW3lSPlAmbDRAN9/I2KcxAHN/35QuF217rd51QBvPoXCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T22:41:06.595439Z"},"content_sha256":"a1993d829920352064e8ee470bd71a2032203bcd9e666bb6d831877023ac7c0f","schema_version":"1.0","event_id":"sha256:a1993d829920352064e8ee470bd71a2032203bcd9e666bb6d831877023ac7c0f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:BSVS5UZPAURUR25547HW3AAWIG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Numerical studies of entanglement properties in one- and two-dimensional quantum Ising and XXZ models","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.other"],"primary_cat":"quant-ph","authors_text":"B. Braiorr-Orrs, M. V. Rakov, M. Weyrauch","submitted_at":"2015-04-01T13:16:58Z","abstract_excerpt":"We investigate entanglement properties of infinite 1D and 2D spin-1/2 quantum Ising and XXZ models. Tensor network methods (MPS in 1D and TERG and CTMRG in 2D) are used to model the ground state of the studied models. Different entanglement measures, such as one-site entanglement entropy, one-tangle, concurrence of formation and assistance, negativity and entanglement per bond are calculated and their `characterizing power' to determine quantum phase transitions is compared. A special emphasis is made on the study of entanglement monogamy properties."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.00220","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":"2026-05-18T01:10:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7DlVmUdtjuh0tOnAZF4vL9EiwAJA8HDwiBuVEe4gSY/021c3fE/V5UNmHGfpygQ7ydnVBGOXcZnfIf0KIuR6CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T22:41:06.595958Z"},"content_sha256":"a487824c9a81b3d851e3919afcb1586213d387d00af87fc07533ca335a2691c8","schema_version":"1.0","event_id":"sha256:a487824c9a81b3d851e3919afcb1586213d387d00af87fc07533ca335a2691c8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BSVS5UZPAURUR25547HW3AAWIG/bundle.json","state_url":"https://pith.science/pith/BSVS5UZPAURUR25547HW3AAWIG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BSVS5UZPAURUR25547HW3AAWIG/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":"2026-08-15T22:41:06Z","links":{"resolver":"https://pith.science/pith/BSVS5UZPAURUR25547HW3AAWIG","bundle":"https://pith.science/pith/BSVS5UZPAURUR25547HW3AAWIG/bundle.json","state":"https://pith.science/pith/BSVS5UZPAURUR25547HW3AAWIG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BSVS5UZPAURUR25547HW3AAWIG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:BSVS5UZPAURUR25547HW3AAWIG","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":"f4580fe441ae33acdc825bc345f82b72b8acff26f8ced44cf7e6998de7d7ba54","cross_cats_sorted":["cond-mat.other"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-04-01T13:16:58Z","title_canon_sha256":"89d29bb9d181709e2e61cd2054241b3eebc766ac69f843f70330ed0abe762c2f"},"schema_version":"1.0","source":{"id":"1504.00220","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1504.00220","created_at":"2026-05-18T01:10:33Z"},{"alias_kind":"arxiv_version","alias_value":"1504.00220v1","created_at":"2026-05-18T01:10:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1504.00220","created_at":"2026-05-18T01:10:33Z"},{"alias_kind":"pith_short_12","alias_value":"BSVS5UZPAURU","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_16","alias_value":"BSVS5UZPAURUR255","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_8","alias_value":"BSVS5UZP","created_at":"2026-05-18T12:29:14Z"}],"graph_snapshots":[{"event_id":"sha256:a487824c9a81b3d851e3919afcb1586213d387d00af87fc07533ca335a2691c8","target":"graph","created_at":"2026-05-18T01:10:33Z","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 investigate entanglement properties of infinite 1D and 2D spin-1/2 quantum Ising and XXZ models. Tensor network methods (MPS in 1D and TERG and CTMRG in 2D) are used to model the ground state of the studied models. Different entanglement measures, such as one-site entanglement entropy, one-tangle, concurrence of formation and assistance, negativity and entanglement per bond are calculated and their `characterizing power' to determine quantum phase transitions is compared. A special emphasis is made on the study of entanglement monogamy properties.","authors_text":"B. Braiorr-Orrs, M. V. Rakov, M. Weyrauch","cross_cats":["cond-mat.other"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-04-01T13:16:58Z","title":"Numerical studies of entanglement properties in one- and two-dimensional quantum Ising and XXZ models"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.00220","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:a1993d829920352064e8ee470bd71a2032203bcd9e666bb6d831877023ac7c0f","target":"record","created_at":"2026-05-18T01:10:33Z","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":"f4580fe441ae33acdc825bc345f82b72b8acff26f8ced44cf7e6998de7d7ba54","cross_cats_sorted":["cond-mat.other"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-04-01T13:16:58Z","title_canon_sha256":"89d29bb9d181709e2e61cd2054241b3eebc766ac69f843f70330ed0abe762c2f"},"schema_version":"1.0","source":{"id":"1504.00220","kind":"arxiv","version":1}},"canonical_sha256":"0cab2ed32f052348ebbde7cf6d801641802915f9fbde92d5ed742cd56e325aef","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0cab2ed32f052348ebbde7cf6d801641802915f9fbde92d5ed742cd56e325aef","first_computed_at":"2026-05-18T01:10:33.459085Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:10:33.459085Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/Kmx4KHYxMPNOor9gV0N3iO+ihIyxY5H5f84JsGQhTU+f1+w8rGgHt8JTcfbZgxkyRkz7LsjhVa/1ICJpSwAAA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:10:33.459730Z","signed_message":"canonical_sha256_bytes"},"source_id":"1504.00220","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a1993d829920352064e8ee470bd71a2032203bcd9e666bb6d831877023ac7c0f","sha256:a487824c9a81b3d851e3919afcb1586213d387d00af87fc07533ca335a2691c8"],"state_sha256":"36d57c3b6021c80425f3cd6d44ed6488eb59896f78aef55bc752653b2992f233"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4n/jPUVRm2hznOvwtr74bam+zUBUC3UAijRVomHUgjIju8kKXsU0f1kVgENSqfxSCFFSvZ9sCuc8U4t3ScwhBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-15T22:41:06.599297Z","bundle_sha256":"87761e809d2ab07963b4cca65413da1bc91677ef40fafbebdee1669fcc204afb"}}