Orbifold quantum cohomology of the classifying space of a finite group

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We work through, in detail, the orbifold quantum cohomology, with gravitational descendants, of the stack BG, the point modulo trivial action of a finite group G. We provide a simple description of algebraic structures on the state space of this theory. As a consequence, we find that multiple copies of commuting Virasoro algebras appear in this theory which completely determine the correlators of the theory.
For the Proceedings of the ``Mathematical Aspects of Orbifold String Theory'' conference in Madison, Wisconsin, May, 2001

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Algebraic Geometry, 14N35; 53D45;20C05

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http://salesiana.dossiersoluciones.com/handle/123456789/62814

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/math/0112037
 http://arxiv.org/abs/math/0112037

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arXiv