Comments on chiral algebras and ?-deformations

Every six-dimensional $\mathcal{N}=(2,0)$ SCFT on $\mathbf{R}^6$ contains a set of protected operators whose correlation functions are controlled by two-dimensional chiral algebra. We provide an alternative construction this algebra performing $\Omega$-deformation~of topological-holomorphic twist the theory and restricting to cohomology specific supercharge. In addition, we show that central charge can be obtained equivariant integration anomaly polynomial theory. Furthermore, generalize include orbifolds $\mathbf{R}^4$ transverse plane.