N=2 Strings on Orbifolds

Abstract

We study closed N=2 strings on orbifolds of the form T^4/Z_2 and C^2/Z_2. We compute the torus partition function and prove its modular invariance. We analyse the BRST cohomology of the theory, construct the vertex operators, and compute three and four point amplitudes of twisted and untwisted states. We introduce a background of D-branes, and compute twist states correlators.

43 pages with no figures; structural changes; ref. added; target-space picture clarified

References in corpus (15)

• D-branes, Quivers, and ALE Instantons
• N=4 Topological Strings
• All Loop N=2 String Amplitudes
• Little String Theory and Heterotic/Type II Duality
• The N=2 open string
• The generalized no-ghost theorem for N=2 SUSY critical strings
• Path-Integral Quantization of the (2,2) String
• The Geometry of $N=2$ Strings with Torsion
• Twisting the N=2 String
• Chiral BRST Cohomology of N=2 Strings at Arbitrary Ghost and Picture Number
• Families of N=2 Strings
• D-branes in N=2 Strings
• The Effective Action and Geometry of Closed N=2 Strings
• D-Brane Scattering of N=2 Strings
• Gauge Symmetries and Amplitudes in N=2 Strings

Cited by in corpus (2)

• N=4 Superconformal Bootstrap of the K3 CFT
• On the Connection between N=2 Minimal String and (1,n) Bosonic Minimal String