Theoretical analysis demonstrates that Yang–Baxter bi-vector deformations generate solutions in type II supergravity, revealing simplified expressions for invariant boundary terms.
We provide a complete proof that Yang–Baxter bi-vector deformations are solution generating transformations in Type II supergravity. The proof does not rely on the assumption that the vielbein is invariant under Lie derivative along all Killing vectors entering the bi-vector. We analyse transformation of boundary terms and derive a simple expression for the case, when the boundary does not change its geometrical locus.
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Bogatyrev et al. (2026) studied this question.
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