Gerbes of chiral differential operators

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In this note we compute the cohomological obstruction to the existence of certain sheaves of vertex algebras on smooth varieties. These sheaves have been introduced and studied in the previous work by A.Vaintrob and two of the authors. Hopefully our result clarifies to some extent the constructions of the above work.
12 pages, Tex. A computation of conformal anomaly is added

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Algebraic Geometry

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http://salesiana.dossiersoluciones.com/handle/123456789/78680

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/math/9906117
 http://arxiv.org/abs/math/9906117

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arXiv