{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2003:RAOX32WZD6CFRONHSMRY22MV75","short_pith_number":"pith:RAOX32WZ","schema_version":"1.0","canonical_sha256":"881d7dead91f8458b9a793238d6995ff5f4080687c4f5a6abdb4a5dcd67fa20b","source":{"kind":"arxiv","id":"hep-th/0311085","version":1},"attestation_state":"computed","paper":{"title":"The modified XXZ Heisenberg chain, conformal invariance, surface exponents of c<1 systems, and hidden symmetries of the finite chains","license":"","headline":"","cross_cats":[],"primary_cat":"hep-th","authors_text":"Uwe Grimm, Vladimir Rittenberg","submitted_at":"2003-11-10T17:38:10Z","abstract_excerpt":"The spin-1/2 XXZ Heisenberg chain with two types of boundary terms is considered. For the first type, the Hamiltonian is hermitian but not for the second type which includes the U_{q}[SU(2)] symmetric case. It is shown that for a certain `tuning' between the anisotropy angle and the boundary terms the spectra present unexpected degeneracies. These degeneracies are related to the structure of the irreducible representations of the Virasoro algebras for c<1."},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"hep-th/0311085","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"hep-th","submitted_at":"2003-11-10T17:38:10Z","cross_cats_sorted":[],"title_canon_sha256":"590e4a51bcf978e6b6b7eba43f61edfb1bcfb62a6146f1bc4db4b51a6869dd2d","abstract_canon_sha256":"3f10d3b5691072583637349f954030db913efeb6062f347a3f5a2815d7d0a928"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:38:46.529721Z","signature_b64":"nqu02pUgPOccjdrd7Fr5aqb7+gBelltVgQi0CBO8IhrgUdyiKtmuref5jEHdFF52HWOvI2kWTC8Vb5eTkis1Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"881d7dead91f8458b9a793238d6995ff5f4080687c4f5a6abdb4a5dcd67fa20b","last_reissued_at":"2026-05-18T01:38:46.529287Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:38:46.529287Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The modified XXZ Heisenberg chain, conformal invariance, surface exponents of c<1 systems, and hidden symmetries of the finite chains","license":"","headline":"","cross_cats":[],"primary_cat":"hep-th","authors_text":"Uwe Grimm, Vladimir Rittenberg","submitted_at":"2003-11-10T17:38:10Z","abstract_excerpt":"The spin-1/2 XXZ Heisenberg chain with two types of boundary terms is considered. For the first type, the Hamiltonian is hermitian but not for the second type which includes the U_{q}[SU(2)] symmetric case. It is shown that for a certain `tuning' between the anisotropy angle and the boundary terms the spectra present unexpected degeneracies. These degeneracies are related to the structure of the irreducible representations of the Virasoro algebras for c<1."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-th/0311085","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"hep-th/0311085","created_at":"2026-05-18T01:38:46.529364+00:00"},{"alias_kind":"arxiv_version","alias_value":"hep-th/0311085v1","created_at":"2026-05-18T01:38:46.529364+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-th/0311085","created_at":"2026-05-18T01:38:46.529364+00:00"},{"alias_kind":"pith_short_12","alias_value":"RAOX32WZD6CF","created_at":"2026-05-18T12:25:52.051335+00:00"},{"alias_kind":"pith_short_16","alias_value":"RAOX32WZD6CFRONH","created_at":"2026-05-18T12:25:52.051335+00:00"},{"alias_kind":"pith_short_8","alias_value":"RAOX32WZ","created_at":"2026-05-18T12:25:52.051335+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/RAOX32WZD6CFRONHSMRY22MV75","json":"https://pith.science/pith/RAOX32WZD6CFRONHSMRY22MV75.json","graph_json":"https://pith.science/api/pith-number/RAOX32WZD6CFRONHSMRY22MV75/graph.json","events_json":"https://pith.science/api/pith-number/RAOX32WZD6CFRONHSMRY22MV75/events.json","paper":"https://pith.science/paper/RAOX32WZ"},"agent_actions":{"view_html":"https://pith.science/pith/RAOX32WZD6CFRONHSMRY22MV75","download_json":"https://pith.science/pith/RAOX32WZD6CFRONHSMRY22MV75.json","view_paper":"https://pith.science/paper/RAOX32WZ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=hep-th/0311085&json=true","fetch_graph":"https://pith.science/api/pith-number/RAOX32WZD6CFRONHSMRY22MV75/graph.json","fetch_events":"https://pith.science/api/pith-number/RAOX32WZD6CFRONHSMRY22MV75/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/RAOX32WZD6CFRONHSMRY22MV75/action/timestamp_anchor","attest_storage":"https://pith.science/pith/RAOX32WZD6CFRONHSMRY22MV75/action/storage_attestation","attest_author":"https://pith.science/pith/RAOX32WZD6CFRONHSMRY22MV75/action/author_attestation","sign_citation":"https://pith.science/pith/RAOX32WZD6CFRONHSMRY22MV75/action/citation_signature","submit_replication":"https://pith.science/pith/RAOX32WZD6CFRONHSMRY22MV75/action/replication_record"}},"created_at":"2026-05-18T01:38:46.529364+00:00","updated_at":"2026-05-18T01:38:46.529364+00:00"}