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arXiv · hep-th/9208039

Trivial Spectrum of Free 1+1 Light-Cone Strings

Eric Smith
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Abstract

The BRST cohomology of 1+1 strings in a free light-cone gauge contains only the two-dimensional tachyon, and excludes all excited states of both matter and ghosts, including the special states that arise in the continuum conformal gauge quantization and in the $c = 1$ matrix models. This exclusion takes place at a very basic level, and therefore may signal some serious problems or at least unresolved issues involved in this gauge choice.

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Eric Smith. 1992-08-13. Trivial Spectrum of Free 1+1 Light-Cone Strings. https://doi.org/10.1016/0370-2693(93)91065-u

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