On the BRST Operator Structure of the N=2 String

Abstract

The BRST operator cohomology of $N=2$ $2d$ supergravity coupled to matter is presented. Descent equations for primary superfields of the matter sector are derived. We find one copy of the cohomology at ghost number one, two independent copies at ghost number two, and conjecture that there is a copy at ghost number three. The $N=2$ string has a twisted $N=4$ superconformal symmetry generated by the $N=2$ superstress tensor, the BRST supercurrent, the antighost superfield, and the ghost number supercurrent.

22 pages, Latex, NSF-ITP-93-17, ITP-SB-93-09, RIP-148-93

References in corpus (5)

• The N=4 string is the same as the N=2 string
• The generalized no-ghost theorem for N=2 SUSY critical strings
• Minimal Models from W-Constrained Hierarchies via the Kontsevich-Miwa Transform
• N=2 String as a Topological Conformal Algebra
• Gauge Symmetries of the N=2 String

Cited by in corpus (15)

• N=4 Topological Strings
• Covariant Quantization of the Green-Schwarz Superstring in a Calabi-Yau Background
• Little String Theory and Heterotic/Type II Duality
• Gso Projection, BRST Cohomology and Picture-Changing in N=2 String Theory
• Superspace conformal field theory
• Toward the Universal Theory of Strings
• Superstrings from Hamiltonian Reduction
• A Hierarchy of Superstrings
• Superstrings from theories with N>1 world-sheet supersymmetry
• N=2 structures in all string theories
• Embeddings for Non-Critical Superstrings
• The BRST Operator for the Large $N=4$ Superconformal Algebra
• Twisting the N=2 String
• TOPOLOGICAL MATTER, MIRROR SYMMETRY AND NON-CRITICAL (SUPER)STRINGS
• On the N=2 Superstring BRST Operator