Ω-deformation and quantization

We formulate a deformation of Rozansky-Witten theory analogous to the $Ω$-deformation. It is applicable when the target space $X$ is hyperkähler and the spacetime is of the form $\mathbb{R} \times Σ$, with $Σ$ being a Riemann surface. In the case that $Σ$ is a disk, the $Ω$-deformed Rozansky-Witten theory quantizes a symplectic submanifold of $X$, thereby providing a new perspective on quantization. As applications, we elucidate two phenomena in four-dimensional gauge theory from this point of view. One is a correspondence between the $Ω$-deformation and quantization of integrable systems. The other concerns supersymmetric loop operators and quantization of the algebra of holomorphic functions on a hyperkähler manifold.

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