Graded contractions of Virasoro algebras

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We describe graded contractions of Virasoro algebra. The highest weight representations of Virasoro algebra are constructed. The reducibility of representations is analysed. In contrast to standart representations the contracted ones are reducible except some special cases. Moreover we find an exotic module with null-plane on fifth level.
10 pages, Latex. Report given at XXIII Int. Colloquium on Group Theoretical Methods in Physics, July 31 - August 05, 2000, Dubna (Russia)

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High Energy Physics - Theory

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http://salesiana.dossiersoluciones.com/handle/123456789/50533

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/hep-th/0102052
 http://arxiv.org/abs/hep-th/0102052

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arXiv