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The worldline realizations of the supergroup SU$(4|1)$ are treated as a deformation of flat ${\\cal N}{=}\\,8$, $d\\,{=}\\,1$ supersymmetry. Using SU$(4|1)$ chiral superfields, we derive invariant actions for the first-type ${\\bf(8,8,0)}$ multiplet, which parametrizes special K\\\"ahler manifolds. Since we are not aware of a manifestly SU$(4|1)$ covariant superfield formalism for the second-type ${\\bf(8,8,0)}$ multiplet, we perform a"},"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":"1807.11804","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2018-07-31T13:22:34Z","cross_cats_sorted":["math-ph","math.MP"],"title_canon_sha256":"0bc86c870cf3249672cae527b965d885a20af34cb8e692d7f4c31ff9085331a3","abstract_canon_sha256":"f9d69d485962d4a98e41c06c720c628eccbbc2ca132c16ade479c7899148dc2a"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:04:55.243629Z","signature_b64":"qhcrPwJCF76I7pSGCxZAP+vHU2Bdy8Ba/RVHn/6vjLky4JOMCqz1dXzF9HTThI6KAwk9VKLQUEaiujPGRHE2AA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7223c43ac98082b56a408bfe52e0e70111d9dedf5867d97197f14a0a0f8ce4b3","last_reissued_at":"2026-05-18T00:04:55.243000Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:04:55.243000Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Deformed ${\\cal N}{=}\\,8$ mechanics of ${\\bf(8,8,0)}$ multiplets","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math-ph","math.MP"],"primary_cat":"hep-th","authors_text":"Evgeny Ivanov, Olaf Lechtenfeld, Stepan Sidorov","submitted_at":"2018-07-31T13:22:34Z","abstract_excerpt":"We construct new models of `curved' SU$(4|1)$ supersymmetric mechanics based on two versions of the off-shell multiplet ${\\bf(8,8,0)}$ which are `mirror' to each other. 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