Three-Point Disc Amplitudes in the RNS Formalism

Understand

We calculate all tree level string theory vacuum to Dp-brane disc amplitudes involving an arbitrary RR-state and two NS-NS vertex operators.

• This computation was earlier performed by K.
• Becker, Guo, and Robbins for the simplest case of a RR-state of type C_{p-3}.
• Here we use the aid of a computer to calculate all possible three-point amplitudes involving a RR-vertex operator of type C_{p+1+2k}.