{"paper":{"title":"Supergravity realisations of $\\lambda$-models","license":"http://creativecommons.org/publicdomain/zero/1.0/","headline":"Type-II supergravity solutions can be constructed from multiple λ-deformed coset CFTs on SO(n+1)/SO(n) that include undeformed AdS factors.","cross_cats":[],"primary_cat":"hep-th","authors_text":"Georgios Itsios, Giuseppe Casale","submitted_at":"2025-12-05T19:03:02Z","abstract_excerpt":"We construct solutions of type-II supergravity based on multiple copies and/or mixings of $\\lambda$-deformed coset CFTs on $\\mathrm{SO}(n+1)_k/\\mathrm{SO}(n)_k$, with $n = 2, 3, 4$. The resulting ten-dimensional geometries contain undeformed $\\mathrm{AdS}$ factors, thereby allowing a connection between $\\lambda$-deformations and the AdS/CFT correspondence. Imposing reality conditions on the solutions further constrains the deformation parameter. In some cases these bounds exclude the undeformed ($\\lambda = 0$) or non-Abelian T-dual ($\\lambda \\to 1$) limits. This work extends the results of 191"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"We construct solutions of type-II supergravity based on multiple copies and/or mixings of λ-deformed coset CFTs on SO(n+1)_k/SO(n)_k, with n = 2, 3, 4. The resulting ten-dimensional geometries contain undeformed AdS factors, thereby allowing a connection between λ-deformations and the AdS/CFT correspondence.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"That the λ-deformed coset CFTs on the specified groups can be consistently combined or mixed and lifted to explicit ten-dimensional type-II supergravity solutions that satisfy all equations of motion while obeying the imposed reality conditions.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"Type-II supergravity solutions are built from λ-deformed coset models that contain undeformed AdS spaces, connecting these deformations to AdS/CFT while constraining λ via reality conditions.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Type-II supergravity solutions can be constructed from multiple λ-deformed coset CFTs on SO(n+1)/SO(n) that include undeformed AdS factors.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"baf1c44a8ff76763a5cbbae8ecfc23a13d8365cd14e6188be7245642ac0dfec6"},"source":{"id":"2512.06091","kind":"arxiv","version":2},"verdict":{"id":"49a163ee-6d8f-49a7-b00e-89764dc4c3af","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-17T00:33:02.717388Z","strongest_claim":"We construct solutions of type-II supergravity based on multiple copies and/or mixings of λ-deformed coset CFTs on SO(n+1)_k/SO(n)_k, with n = 2, 3, 4. The resulting ten-dimensional geometries contain undeformed AdS factors, thereby allowing a connection between λ-deformations and the AdS/CFT correspondence.","one_line_summary":"Type-II supergravity solutions are built from λ-deformed coset models that contain undeformed AdS spaces, connecting these deformations to AdS/CFT while constraining λ via reality conditions.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"That the λ-deformed coset CFTs on the specified groups can be consistently combined or mixed and lifted to explicit ten-dimensional type-II supergravity solutions that satisfy all equations of motion while obeying the imposed reality conditions.","pith_extraction_headline":"Type-II supergravity solutions can be constructed from multiple λ-deformed coset CFTs on SO(n+1)/SO(n) that include undeformed AdS factors."},"references":{"count":37,"sample":[{"doi":"","year":2014,"title":"Integrable interpolations: From exact CFTs to non-Abelian T-duals","work_id":"dd0e9b34-c748-498a-a01a-0fc761c4da47","ref_index":1,"cited_arxiv_id":"1312.4560","is_internal_anchor":true},{"doi":"","year":1984,"title":"Nonabelian Bosonization in Two-Dimensions,","work_id":"8de685e9-f913-4bc8-ae00-1e8698ebe96b","ref_index":2,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2014,"title":"Integrable Deformations of Strings on Symmetric Spaces","work_id":"9eefe4bf-7291-4906-b0b5-78c457c20bd6","ref_index":3,"cited_arxiv_id":"1407.2840","is_internal_anchor":true},{"doi":"","year":2014,"title":"An Integrable Deformation of the AdS5 x S5 Superstring","work_id":"0094898b-5e32-4e6b-816b-62a8ac97696f","ref_index":4,"cited_arxiv_id":"1409.1538","is_internal_anchor":true},{"doi":"","year":2025,"title":"Integrability of the λ-deformation of the PCM with spectators,","work_id":"9791053b-57fc-45bc-af83-caa4ecd9b67c","ref_index":5,"cited_arxiv_id":"","is_internal_anchor":false}],"resolved_work":37,"snapshot_sha256":"51eafa812e6f8b5db2bc398e3287928fe4d9e2d678ac122a408cba6589d19dc2","internal_anchors":29},"formal_canon":{"evidence_count":1,"snapshot_sha256":"52a8a4acd76ec2d70277f71d87e42f0baef24bf2f40fcea784bae1359481180e"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}