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- Title
Ambitwistor string amplitudes in light-like linear dilaton background.
- Authors
Kato, Mayu; Nakayama, Yu
- Abstract
Using the ambitwistor string theory, we study graviton scattering amplitudes in a light-like linear dilaton background of 10-dimensional supergravity. At the tree level, we find that the three-graviton amplitude coincides with the type-II superstring theory, and the four-graviton or more amplitudes differ from the superstring theory but satisfy the scattering equations. Due to a modified momentum conservation law different at each order in genus expansion, a nonzero amplitude is determined solely from the particular order in perturbation theory without further corrections.
- Subjects
DILATON; SUPERSTRING theories; STRING theory; GRAVITONS; SCATTERING amplitude (Physics); PERTURBATION theory
- Publication
International Journal of Modern Physics A: Particles & Fields; Gravitation; Cosmology; Nuclear Physics, 2023, Vol 38, Issue 12/13, p1
- ISSN
0217-751X
- Publication type
Article
- DOI
10.1142/S0217751X23500653