An ambitwistor string field theory approach to supergravity

Riccombeni, Daniel Alberto

Abstract

In this thesis a covariant closed superstring field theory, equivalent to classical ten-dimensional Type II supergravity, is presented. The defining conformal field theory is the ambitwistor string worldsheet theory of Mason and Skinner [1]. This theory is known to reproduce the scattering amplitudes of Cachazo, He and Yuan [2] in which the scattering equations play an important role and our ambitwistor string field theory naturally incorporates these results. We present the operator formalism description of the ambitwsitor string and propose an action for the string field theory of the bosonic and supersymmetric theories. The correct linearised gauge symmetries and spacetime actions are explicitly reproduced and evidence is given that the action is correct to all orders. The focus is on the Neveu-Schwarz sector and the explicit description of tree level perturbation theory about flat spacetime. This thesis is fully based in our published paper [3] and so has a considerable overlap with it.

Citation

Riccombeni, D. A. (2018). An ambitwistor string field theory approach to supergravity. (Thesis). University of Hull. Retrieved from https://hull-repository.worktribe.com/output/4398544

• Thesis Type: Thesis
• Deposit Date: Sep 25, 2023
• Publicly Available Date: Sep 25, 2023
• Keywords: Mathematics
• Public URL: https://hull-repository.worktribe.com/output/4398544
• Additional Information: Department of Physics & Mathematics; University of Hull
• Award Date: Jul 1, 2018