{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2006:X424V5DIQVFHEZR3PMZXWBWGYU","short_pith_number":"pith:X424V5DI","canonical_record":{"source":{"id":"nlin/0610017","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"nlin.SI","submitted_at":"2006-10-09T18:49:20Z","cross_cats_sorted":["cond-mat.stat-mech","hep-th"],"title_canon_sha256":"a5da1652d68bd9a4d76d7fcfd90dfe3aa6a062609b60ea79cf9cc13db45111e7","abstract_canon_sha256":"b34ae640873790509ea89669c0e1dc57d21afec8c86d01afe1d5dbcfeb434554"},"schema_version":"1.0"},"canonical_sha256":"bf35caf468854a72663b7b337b06c6c51895ca955db31d0290e61fd1c1a3215d","source":{"kind":"arxiv","id":"nlin/0610017","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"nlin/0610017","created_at":"2026-05-18T04:28:37Z"},{"alias_kind":"arxiv_version","alias_value":"nlin/0610017v2","created_at":"2026-05-18T04:28:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.nlin/0610017","created_at":"2026-05-18T04:28:37Z"},{"alias_kind":"pith_short_12","alias_value":"X424V5DIQVFH","created_at":"2026-05-18T12:25:54Z"},{"alias_kind":"pith_short_16","alias_value":"X424V5DIQVFHEZR3","created_at":"2026-05-18T12:25:54Z"},{"alias_kind":"pith_short_8","alias_value":"X424V5DI","created_at":"2026-05-18T12:25:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2006:X424V5DIQVFHEZR3PMZXWBWGYU","target":"record","payload":{"canonical_record":{"source":{"id":"nlin/0610017","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"nlin.SI","submitted_at":"2006-10-09T18:49:20Z","cross_cats_sorted":["cond-mat.stat-mech","hep-th"],"title_canon_sha256":"a5da1652d68bd9a4d76d7fcfd90dfe3aa6a062609b60ea79cf9cc13db45111e7","abstract_canon_sha256":"b34ae640873790509ea89669c0e1dc57d21afec8c86d01afe1d5dbcfeb434554"},"schema_version":"1.0"},"canonical_sha256":"bf35caf468854a72663b7b337b06c6c51895ca955db31d0290e61fd1c1a3215d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:28:37.125146Z","signature_b64":"660lNJcSAcadpJGPlHJLCYRskfLF4aCgXaabo0Ixn9N/YQ1qI224HVYxE8+VbdYeSblkiy7QlaZGSDfYKzyyCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bf35caf468854a72663b7b337b06c6c51895ca955db31d0290e61fd1c1a3215d","last_reissued_at":"2026-05-18T04:28:37.124718Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:28:37.124718Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"nlin/0610017","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":"2026-05-18T04:28:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ju0tCiSHC+6XyyGDrYDNMIoUbj2UghD5nxgTn1SEEN+q16taeN1bwaje0C6bmgt/Gcwouwe/sfqD60dD6CA3CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T08:09:02.264974Z"},"content_sha256":"e3457c8db60f197a52b5e3389496e061be95ae4c4bd010e96ce227142594cf09","schema_version":"1.0","event_id":"sha256:e3457c8db60f197a52b5e3389496e061be95ae4c4bd010e96ce227142594cf09"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2006:X424V5DIQVFHEZR3PMZXWBWGYU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Analytic Bethe Ansatz for a Chain with Centrally Extended su(2|2) Symmetry","license":"","headline":"","cross_cats":["cond-mat.stat-mech","hep-th"],"primary_cat":"nlin.SI","authors_text":"Niklas Beisert","submitted_at":"2006-10-09T18:49:20Z","abstract_excerpt":"We investigate the integrable structure of spin chain models with centrally extended su(2|2) and psu(2,2|4) symmetry. These chains have their origin in the planar AdS/CFT correspondence, but they also contain the one-dimensional Hubbard model as a special case. We begin with an overview of the representation theory of centrally extended su(2|2). These results are applied in the construction and investigation of an interesting S-matrix with su(2|2) symmetry. In particular, they enable a remarkably simple proof of the Yang-Baxter relation. We also show the equivalence of the S-matrix to Shastry'"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nlin/0610017","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":""},"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":"2026-05-18T04:28:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"F2rSLCctsRPBVVKGEOuEtJ6iXCUKhpTcUUwZcGYfQUMjh7CT6b8bG9YUmxDqjjAx+TAORAy4aeeLGxRvJHY+AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T08:09:02.265836Z"},"content_sha256":"f0976c64e7aa50ef3f572f78c04ba804854d134ad34690c342de2e0920070938","schema_version":"1.0","event_id":"sha256:f0976c64e7aa50ef3f572f78c04ba804854d134ad34690c342de2e0920070938"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/X424V5DIQVFHEZR3PMZXWBWGYU/bundle.json","state_url":"https://pith.science/pith/X424V5DIQVFHEZR3PMZXWBWGYU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/X424V5DIQVFHEZR3PMZXWBWGYU/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":"2026-08-15T08:09:02Z","links":{"resolver":"https://pith.science/pith/X424V5DIQVFHEZR3PMZXWBWGYU","bundle":"https://pith.science/pith/X424V5DIQVFHEZR3PMZXWBWGYU/bundle.json","state":"https://pith.science/pith/X424V5DIQVFHEZR3PMZXWBWGYU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/X424V5DIQVFHEZR3PMZXWBWGYU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2006:X424V5DIQVFHEZR3PMZXWBWGYU","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":"b34ae640873790509ea89669c0e1dc57d21afec8c86d01afe1d5dbcfeb434554","cross_cats_sorted":["cond-mat.stat-mech","hep-th"],"license":"","primary_cat":"nlin.SI","submitted_at":"2006-10-09T18:49:20Z","title_canon_sha256":"a5da1652d68bd9a4d76d7fcfd90dfe3aa6a062609b60ea79cf9cc13db45111e7"},"schema_version":"1.0","source":{"id":"nlin/0610017","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"nlin/0610017","created_at":"2026-05-18T04:28:37Z"},{"alias_kind":"arxiv_version","alias_value":"nlin/0610017v2","created_at":"2026-05-18T04:28:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.nlin/0610017","created_at":"2026-05-18T04:28:37Z"},{"alias_kind":"pith_short_12","alias_value":"X424V5DIQVFH","created_at":"2026-05-18T12:25:54Z"},{"alias_kind":"pith_short_16","alias_value":"X424V5DIQVFHEZR3","created_at":"2026-05-18T12:25:54Z"},{"alias_kind":"pith_short_8","alias_value":"X424V5DI","created_at":"2026-05-18T12:25:54Z"}],"graph_snapshots":[{"event_id":"sha256:f0976c64e7aa50ef3f572f78c04ba804854d134ad34690c342de2e0920070938","target":"graph","created_at":"2026-05-18T04:28:37Z","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 the integrable structure of spin chain models with centrally extended su(2|2) and psu(2,2|4) symmetry. These chains have their origin in the planar AdS/CFT correspondence, but they also contain the one-dimensional Hubbard model as a special case. We begin with an overview of the representation theory of centrally extended su(2|2). These results are applied in the construction and investigation of an interesting S-matrix with su(2|2) symmetry. In particular, they enable a remarkably simple proof of the Yang-Baxter relation. We also show the equivalence of the S-matrix to Shastry'","authors_text":"Niklas Beisert","cross_cats":["cond-mat.stat-mech","hep-th"],"headline":"","license":"","primary_cat":"nlin.SI","submitted_at":"2006-10-09T18:49:20Z","title":"The Analytic Bethe Ansatz for a Chain with Centrally Extended su(2|2) Symmetry"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nlin/0610017","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:e3457c8db60f197a52b5e3389496e061be95ae4c4bd010e96ce227142594cf09","target":"record","created_at":"2026-05-18T04:28:37Z","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":"b34ae640873790509ea89669c0e1dc57d21afec8c86d01afe1d5dbcfeb434554","cross_cats_sorted":["cond-mat.stat-mech","hep-th"],"license":"","primary_cat":"nlin.SI","submitted_at":"2006-10-09T18:49:20Z","title_canon_sha256":"a5da1652d68bd9a4d76d7fcfd90dfe3aa6a062609b60ea79cf9cc13db45111e7"},"schema_version":"1.0","source":{"id":"nlin/0610017","kind":"arxiv","version":2}},"canonical_sha256":"bf35caf468854a72663b7b337b06c6c51895ca955db31d0290e61fd1c1a3215d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bf35caf468854a72663b7b337b06c6c51895ca955db31d0290e61fd1c1a3215d","first_computed_at":"2026-05-18T04:28:37.124718Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:28:37.124718Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"660lNJcSAcadpJGPlHJLCYRskfLF4aCgXaabo0Ixn9N/YQ1qI224HVYxE8+VbdYeSblkiy7QlaZGSDfYKzyyCg==","signature_status":"signed_v1","signed_at":"2026-05-18T04:28:37.125146Z","signed_message":"canonical_sha256_bytes"},"source_id":"nlin/0610017","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e3457c8db60f197a52b5e3389496e061be95ae4c4bd010e96ce227142594cf09","sha256:f0976c64e7aa50ef3f572f78c04ba804854d134ad34690c342de2e0920070938"],"state_sha256":"68c03429a4b3fe7b90b6ae419e5ba93de47c19c8a911d8626bbfcb8cd3a54fa0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8kiftWY0vV3ID/TfpSI1Cm+uKy/pjUkp5mSD7nsD8hypJGYogTGFvq18eW2UDPMtnIypjJcSrXAFPDeElSMpBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-15T08:09:02.271563Z","bundle_sha256":"8e26e8203b9b3aa93ebe53ba4956eff124cfd6e24f26d0eee0959924b7d760a3"}}