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arXiv · hep-th/9901116

Spectrum Generating Algebra and No-Ghost Theorem for Fermionic Massive String

Zbigniew Hasiewicz·Zbigniew Jaskolski·Andrzej Ostrowski
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Abstract

The covariant operator quantization of the ordinary free spinning BDH string modified by adding the supersymmetric Liouville sector is analysed in the even target space dimensions $d=2,4,6,8$. The spectrum generating algebra for this model is constructed and a general version of the no-ghost theorem is proven. A counterpart of the GSO projection leads to a family of tachyon free unitary free string theories. One of these models is equivalent to the non-critical Rammond-Neveu-Schwarz spinning string truncated in the Neveu-Schwarz sector to the tachyon free eigenspace of the fermion parity operator.

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Zbigniew Hasiewicz, Zbigniew Jaskolski, Andrzej Ostrowski. 1999-01-23. Spectrum Generating Algebra and No-Ghost Theorem for Fermionic Massive String. https://doi.org/10.1016/s0550-3213(99)00256-4

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