The No-ghost Theorem for AdS_3 and the Stringy Exclusion Principle

Abstract

A complete proof of the No-ghost Theorem for bosonic and fermionic string theories on AdS_3, or the group manifold of SU(1,1), is given. It is then shown that the restriction on the spin (in terms of the level) that is necessary to obtain a ghost-free spectrum corresponds to the stringy exclusion principle of Maldacena and Strominger.

20 pages, LaTeX; references added

References in corpus (3)

• AdS3 Black Holes and a Stringy Exclusion Principle
• Spectrum of Large N Gauge Theory from Supergravity
• Ghost-free and Modular Invariant Spectra of a String in SL(2,R) and Three Dimensional Black Hole Geometry

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