Sphere-level Ramond–Ramond couplings in Ramond–Neveu–Schwarz formalism

2013/12/31 by Hamid R. Bakhtiarizadeh, Mohammad R. Garousi · 1 citation
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Dilaton #Formalism (music) #Mathematical physics #Noncommutative and Quantum Gravity Theories #Physics #Quantum electrodynamics #Quantum mechanics #Scattering #Scattering amplitude #Superstring theory #Supersymmetry #hep-th

paper · pdf · doi:10.1016/j.nuclphysb.2014.05.002

34 pages, Latex file, no figure; v3: the version appears in npb

arxiv created 2014/05/08 · openalex publication_date 2014/05/14 · arxiv updated 2015/06/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We calculate in detail the sphere-level scattering amplitude of two Ramond–Ramond (RR) and two Neveu–Schwarz–Neveu–Schwarz (NSNS) vertex operators in type II superstring theories in Ramond–Neveu–Schwarz (RNS) formalism. We then compare the expansion of this amplitude at order α′3 with the eight-derivative couplings of the gravity and B-field that have been recently found based on S-dual and T-dual Ward identities. We find exact agreement. Moreover, using the above S-matrix element, we have found various couplings involving the dilaton field, and shown that they are also fully consistent with these Ward identities.

Citations

• Open & Closed vs. Pure Open String Disk Amplitudes
• Supersymmetry constraints on type IIB supergravity
• Effects of D-instantons
• Dyon-monopole bound states, self-dual harmonic forms on the multi-monopole moduli space, and SL (2,Z) invariance in string theory
• Superstring modifications of Einstein's equations
• Two-loop superstrings VI Nonrenormalization theorems and the 4-point function
• STRONG–WEAK COUPLING DUALITY IN FOUR-DIMENSIONAL STRING THEORY
• Eisenstein series in string theory

Cited by

• DIS off glueballs from string theory: the role of the chiral anomaly and the Chern-Simons term