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

James T. Liu (1) , Ruben Minasian (2)

1 Department of Physics [Ann Arbor]
2 IPHT - Institut de Physique Théorique - UMR CNRS 3681

We compute the tree-level $H^2$ $R^3$ 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.

Domaines: Physique des Hautes Energies - Théorie [hep-th]

James T. Liu, Ruben Minasian. Higher-derivative couplings in string theory: five-point contact terms. Nuclear Physics B, 2019, 874 (2), pp.413-470. ⟨10.1016/j.nuclphysb.2013.06.002⟩. ⟨cea-03109892⟩