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arXiv · 1912.10974

Higher-derivative couplings in string theory: five-point contact terms

James T. Liu·Ruben Minasian
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Abstract

We compute the tree-level $H^2R^3$ couplings of type II strings and provide some basic tests of the couplings by considering both K3 and Calabi-Yau threefold compactifications. Curiously, additional kinematical structures show up at tree level that are not present in the one-loop couplings. This has interesting implications for type II supersymmetry as well as $SL(2, \mathbb Z)$ duality in type IIB strings.

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James T. Liu, Ruben Minasian. 2021-04-19. Higher-derivative couplings in string theory: five-point contact terms. https://arxiv.org/abs/1912.10974

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