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arXiv 0812.1620math.RThep-thmath-phmath.MP
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作为半无限上同调的量子群

Quantum Group as Semi-infinite Cohomology

Igor B. Frenkel, Anton M. Zeitlin

摘要:

我们得到了量子群$SL_q(2)$作为Virasoro代数的半无限上同调,其值为两个中心电荷互补的辫顶点算子代数的张量积$c+\bar{c}=26$ .每个编织VOA是从Virasoro代数的自由Fock空间实现与一个额外的q-变形谐振子自由度。辫状VOA结构来源于构形空间上的局部系统理论,它在上同调上产生一个结合代数结构。我们明确地提供了四个上同调类,作为$SL_q(2)$的生成元,并验证它们之间的关系。我们还讨论了我们的建设和它的连接到刘维尔模型和最小弦理论的可能扩展。

英文摘要:

We obtain the quantum group $SL_q(2)$ as semi-infinite cohomology of the Virasoro algebra with values in a tensor product of two braided vertex operator algebras with complementary central charges $c+\bar{c}=26$. Each braided VOA is constructed from the free Fock space realization of the Virasoro algebra with an additional q-deformed harmonic oscillator degree of freedom. The braided VOA structure arises from the theory of local systems over configuration spaces and it yields an associative algebra structure on the cohomology. We explicitly provide the four cohomology classes that serve as the generators of $SL_q(2)$ and verify their relations. We also discuss the possible extensions of our construction and its connection to the Liouville model and minimal string theory.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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