17–19 Feb 2025
Sapienza University of Rome
Europe/Rome timezone

The AdS4 × CP3 Virasoro-Shapiro Amplitude

18 Feb 2025, 14:30
45m
Physics Department - Aula Amaldi (Marconi Building) (Sapienza University of Rome)

Physics Department - Aula Amaldi (Marconi Building)

Sapienza University of Rome

Piazzale Aldo Moro, 5 · 06 49911 Rome (Italy)

Speaker

Tobias Hansen

Description

I will present the derivation of the AdS Virasoro-Shapiro amplitude for the scattering of gravitons in type IIA string theory on AdS4xCP3. This is achieved by combining the structure of the OPE in the AdS/CFT dual ABJM theory with an ansatz for the amplitude as a string worldsheet integral over single-valued polylogarithms. In this way we fix the first two curvature corrections, which satisfy consistency checks in the high energy limit, the low energy expansion as previously fixed using supersymmetric localisation, and for the dimensions of the exchanged massive string operators, some of which have been independently computed using integrability. We also predict the strong coupling dimensions of some operators which have not been previously studied using integrability.

Presentation materials