2024/08/19 by Cassiano A. Daniel, Daniel, Cassiano A.
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Theory (hep-th) #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.2408.10418
openalex publication_date 2024/08/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Not much is known about superstring scattering amplitudes in curved backgrounds. Using the hybrid formalism in \rm AdS3 × S3 with pure NS-NS three-form flux, we compute a \rm PSU(1,1|2)-covariant three-point amplitude for half-BPS vertex operators inserted on the \rm AdS3 boundary and show that it agrees with the RNS computation. The zero-mode prescription for the fermions in \rm AdS is defined in terms of the "standard" spacetime SUSY generator. It is found that integrating out the fermionic worldsheet fields in the path integral gives rise to the target-space vielbein, which explicitly encodes that the conformal group on the boundary is identified with the symmetry group of the \rm AdS bulk.