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Boundary Weyl anomaly of $\mathcal{N}=(2,2)$ superconformal models (1612.06386v1)

Published 19 Dec 2016 in hep-th

Abstract: We calculate the trace and axial anomalies of $\mathcal{N}=(2,2)$ superconformal theories with exactly marginal deformations, on a surface with boundary. Extending recent work by Gomis et al, we derive the boundary contribution that captures the anomalous scale dependence of the one-point functions of exactly marginal operators. Integration of the bulk super-Weyl anomaly shows that the sphere partition function computes the K\"ahler potential $K(\lambda, \bar\lambda)$ on the superconformal manifold. Likewise, our results confirm the conjecture that the partition function on the supersymmetric hemisphere computes the holomorphic central charge, $c\Omega(\lambda)$, associated with the boundary condition $\Omega$. The boundary entropy, given by a ratio of hemispheres and sphere, is therefore fully determined by anomalies.

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