Supergravity realisations of λ-models

2025/12/05 by Casale, Giuseppe, Itsios, Georgios
Physics and Astronomy · #Black Holes and Theoretical Physics #FOS: Physical sciences #High Energy Physics - Theory (hep-th) #Noncommutative and Quantum Gravity Theories #Nonlinear Waves and Solitons

paper · doi:10.48550/arxiv.2512.06091

openalex publication_date 2025/12/05 · openalex created_date 2025/12/10 · openalex updated_date 2026/07/28

Abstract

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. Imposing reality conditions on the solutions further constrains the deformation parameter. In some cases these bounds exclude the undeformed (λ= 0) or non-Abelian T-dual (λ→ 1) limits. This work extends the results of 1911.12371 and 2411.11086.

Citations

• Scale without conformal invariance from integrable deformations of coset CFTs
• Type-II backgrounds from deformed coset CFTs
• G-structures for black hole near-horizon geometries
• Field Theory Aspects of non-Abelian T-duality and N=2 Linear Quivers
• Type IIB supergravity solution for the T-dual of the eta-deformed AdS₅ x S⁵ superstring

Related

• Type-II backgrounds from deformed coset CFTs
• Integrable λ-deformations: Squashing Coset CFTs and AdS₅× S⁵
• Scale without conformal invariance from integrable deformations of coset CFTs
• Type IIB supergravity solution for the T-dual of the eta-deformed AdS₅ x S⁵ superstring
• Consistent truncations and G₂-invariant AdS₄ solutions of D=11 supergravity