Abstract
After constructing a simplified four-dimensional version of the b ghost, topological multiloop amplitudes in type II superstring theory compactified on a six-dimensional orbifold are computed using the non-minimal pure spinor formalism. These pure spinor amplitude computations preserve manifest N = 2 D = 4 supersymmetry and, unlike the analogous topological multiloop amplitude computations using the hybrid formalism, can be extended to non-topological amplitudes.
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Berkovits, N., Ypanaqué, L.A. Topological amplitude computations using the pure spinor formalism. J. High Energ. Phys. 2019, 103 (2019). https://doi.org/10.1007/JHEP12(2019)103
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DOI: https://doi.org/10.1007/JHEP12(2019)103