The conjecture that BCOV theory on $\mathbb{C}^5$ twists type IIB supergravity

BCOV theory is a closed-string field theory for the topological $B$-model, formulated here on complex affine space. Type IIB supergravity is the ten-dimensional supergravity theory on $\mathbb{R}^{10}$. Twisted-supergravity conjecture. BCOV theory on $\mathbb{C}^5$ is a twist of type IIB supergravity theory on $\mathbb{R}^{10}$. This conjecture would identify the holomorphic theory constructed in the paper with a twist of ten-dimensional type IIB supergravity; the paper presents compatibility with holomorphic Chern–Simons theory as evidence, but does not prove the identification.