{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:E54YB4LHL7AZVMHSROMVMVJNG4","short_pith_number":"pith:E54YB4LH","schema_version":"1.0","canonical_sha256":"277980f1675fc19ab0f28b9956552d3738b2d999964353b59603b40b88b10b2b","source":{"kind":"arxiv","id":"2606.27846","version":1},"attestation_state":"computed","paper":{"title":"Tree-level S matrix for $\\lambda$-deformed AdS3 strings","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-th","authors_text":"Alessandro Sfondrini, Marco Costantino, Silvia Penati","submitted_at":"2026-06-26T08:40:51Z","abstract_excerpt":"We consider the supersymmetric $\\lambda$-deformation of $\\text{AdS}_3 \\times \\text{S}^3 \\times \\text{T}^4$ superstrings and compute its perturbative bosonic tree-level worldsheet S matrix in the light-cone gauge. For generic values of $0 \\leq \\lambda < 1$, we show that the worldsheet scattering remains compatible with integrability due to a non-trivial cancellation of non-elastic scattering processes. By contrast, the S matrix becomes ill-defined for $\\lambda \\to 1$, despite the fact that this limit reproduces the non-Abelian T-dual geometry up to an analytic continuation. This suggests that t"},"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":"2606.27846","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2026-06-26T08:40:51Z","cross_cats_sorted":[],"title_canon_sha256":"faa602b4cf4ed55333e8ed421574e50249270d97a20a938b66ea27f3355fa8b5","abstract_canon_sha256":"80238f3bfda9b16c8e563a4b13059e4e1bbcf84f8846b04899b2120e6e31eb06"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-29T01:14:50.195783Z","signature_b64":"jQrdPcqa7SCRusYc6jdekswRrlwaBUgrawTD1WLmG/KEhdsyB95cuzdaRdTVJ8EshrQC6XCDHMtW2xw75irbCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"277980f1675fc19ab0f28b9956552d3738b2d999964353b59603b40b88b10b2b","last_reissued_at":"2026-06-29T01:14:50.195394Z","signature_status":"signed_v1","first_computed_at":"2026-06-29T01:14:50.195394Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Tree-level S matrix for $\\lambda$-deformed AdS3 strings","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-th","authors_text":"Alessandro Sfondrini, Marco Costantino, Silvia Penati","submitted_at":"2026-06-26T08:40:51Z","abstract_excerpt":"We consider the supersymmetric $\\lambda$-deformation of $\\text{AdS}_3 \\times \\text{S}^3 \\times \\text{T}^4$ superstrings and compute its perturbative bosonic tree-level worldsheet S matrix in the light-cone gauge. For generic values of $0 \\leq \\lambda < 1$, we show that the worldsheet scattering remains compatible with integrability due to a non-trivial cancellation of non-elastic scattering processes. By contrast, the S matrix becomes ill-defined for $\\lambda \\to 1$, despite the fact that this limit reproduces the non-Abelian T-dual geometry up to an analytic continuation. This suggests that t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.27846","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2606.27846/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2606.27846","created_at":"2026-06-29T01:14:50.195444+00:00"},{"alias_kind":"arxiv_version","alias_value":"2606.27846v1","created_at":"2026-06-29T01:14:50.195444+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.27846","created_at":"2026-06-29T01:14:50.195444+00:00"},{"alias_kind":"pith_short_12","alias_value":"E54YB4LHL7AZ","created_at":"2026-06-29T01:14:50.195444+00:00"},{"alias_kind":"pith_short_16","alias_value":"E54YB4LHL7AZVMHS","created_at":"2026-06-29T01:14:50.195444+00:00"},{"alias_kind":"pith_short_8","alias_value":"E54YB4LH","created_at":"2026-06-29T01:14:50.195444+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/E54YB4LHL7AZVMHSROMVMVJNG4","json":"https://pith.science/pith/E54YB4LHL7AZVMHSROMVMVJNG4.json","graph_json":"https://pith.science/api/pith-number/E54YB4LHL7AZVMHSROMVMVJNG4/graph.json","events_json":"https://pith.science/api/pith-number/E54YB4LHL7AZVMHSROMVMVJNG4/events.json","paper":"https://pith.science/paper/E54YB4LH"},"agent_actions":{"view_html":"https://pith.science/pith/E54YB4LHL7AZVMHSROMVMVJNG4","download_json":"https://pith.science/pith/E54YB4LHL7AZVMHSROMVMVJNG4.json","view_paper":"https://pith.science/paper/E54YB4LH","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2606.27846&json=true","fetch_graph":"https://pith.science/api/pith-number/E54YB4LHL7AZVMHSROMVMVJNG4/graph.json","fetch_events":"https://pith.science/api/pith-number/E54YB4LHL7AZVMHSROMVMVJNG4/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/E54YB4LHL7AZVMHSROMVMVJNG4/action/timestamp_anchor","attest_storage":"https://pith.science/pith/E54YB4LHL7AZVMHSROMVMVJNG4/action/storage_attestation","attest_author":"https://pith.science/pith/E54YB4LHL7AZVMHSROMVMVJNG4/action/author_attestation","sign_citation":"https://pith.science/pith/E54YB4LHL7AZVMHSROMVMVJNG4/action/citation_signature","submit_replication":"https://pith.science/pith/E54YB4LHL7AZVMHSROMVMVJNG4/action/replication_record"}},"created_at":"2026-06-29T01:14:50.195444+00:00","updated_at":"2026-06-29T01:14:50.195444+00:00"}