A Superstring Field Theory for Supergravity

Understand

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.
• This theory is known to reproduce the scattering amplitudes of Cachazo, He and Yuan in which the scattering equations play an important role and the string field theory naturally incorporates these results.
• We investigate the operator formalism description of the ambitwsitor string and propose an action for the string field theory of the bosonic and supersymmetric theories.