712 citations · 8.4k across the 134 of their papers we have counts for
6 papers · 1 filter
A New Approach to Superstring Field Theory
Nathan Berkovits
I review the construction of an action for open superstring field theory which does not suffer from the contact term problems of other approaches. I also discuss a possible general…
Quantization of the Superstring in Ramond-Ramond Backgrounds
Nathan Berkovits
Sigma model actions are constructed for the Type II superstring compactified to four and six dimensional curved backgrounds which can contain non-vanishing Ramond-Ramond fields. Th…
Superstring Theory on AdS_2 x S^2 as a Coset Supermanifold
N. Berkovits, M. Bershadsky, T. Hauer +2
We quantize the superstring on the AdS_2 x S^2 background with Ramond-Ramond flux using a PSU(1,1|2)/U(1) x U(1) sigma model with a WZ term. One-loop conformal invariance of the mo…
Quantization of the Type II Superstring in a Curved Six-Dimensional Background
Nathan Berkovits
A sigma model action with N=2 D=6 superspace variables is constructed for the Type II superstring compactified to six curved dimensions with Ramond-Ramond flux. The action can be q…
Conformal Field Theory of AdS Background with Ramond-Ramond Flux
N. Berkovits, C. Vafa, E. Witten
We review a formalism of superstring quantization with manifest six-dimensional spacetime supersymmetry, and apply it to AdS_3 x S^3 backgrounds with Ramond-Ramond flux. The result…
Quantization of the Superstring with Manifest U(5) Super-Poincare Invariance
Nathan Berkovits
The superstring is quantized in a manner which manifestly preserves a U(5) subgroup of the (Wick-rotated) ten-dimensional super-Poincaré invariance. This description of the superst…