Gauge Symmetries and Amplitudes in N=2 Strings

Abstract

Picture changed operators are discussed in $N=2$ strings with space-time signature $(2,2)$. A gauge symmetry algebra is derived in a background of torus space-time $T^{2,2}$ and its simple representation on the picture changed operators is given. Simple Ward identities associated with the gauge algebra and their consequences for three and four point amplitudes of arbitrary loops are also discussed.

16 pages

Cited by in corpus (4)

• Twisting the N=2 String
• The Effective Action and Geometry of Closed N=2 Strings
• Ward identities and the vanishing theorem for loop amplitudes of the closed N=2 string
• N=2 Strings on Orbifolds