BRST Quantization of String Theory in AdS(3)
arXiv:hep-th/0304230 · doi:10.1088/1126-6708/2003/06/053
Abstract
We study the BRST quantization of bosonic and NSR strings propagating in AdS(3) x N backgrounds. The no-ghost theorem is proved using the Frenkel-Garland-Zuckerman method. Regular and spectrally-flowed representations of affine SL(2,R) appear on an equal footing. Possible generalizations to related curved backgrounds are discussed.
JHEP style, 23 pages; v2:minor changes and references added; v3: typos corrected, version to appear in JHEP; v4: one reference added