String Theory on AdS Orbifolds

Abstract

We consider worldsheet string theory on $Z_N$ orbifolds of $Ad{S}_3$ associated with conical singularities. If the orbifold action includes a similar twist of $S^3$, supersymmetry is preserved, and there is a moduli space of vacua arising from blowup modes of the orbifold singularity. We exhibit the spectrum, including the properties of twisted sectors and states obtained by fractional spectral flow. A subalgebra of the spacetime superconformal symmetry remains intact after the $Z_N$ quotient, and serves as the spacetime symmetry algebra of the orbifold.

37 pages, 3 eps figures. v2: Substantial revision to section 7, on spacetime CFT interpretation

References in corpus (2)

• Metric of the multiply wound rotating string
• Geometrical interpretation of D-branes in gauged WZW models

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