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arXiv 0911.0922math.AGhep-thmath-phmath.MP
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旗流形上的顶点代数与李代数上同调

A vertex algebra attached to the flag manifold and Lie algebra cohomology

T. Arakawa, F. Malikov

摘要:

每个旗流形携带唯一的手征微分算子代数。沿着arXiv:0903.1281的路线继续,我们计算这个代数的上同调上的顶点代数结构。答案是:中心和子代数的张量积;作为交换结合代数,中心同构于相应的极大幂零李代数的上同调;子代数是临界水平和0中心特征标的相应仿射李代数上的真空模。接下来,我们找到了上同调代数的Friedan-Martinec-Shenker-Borisov玻色化,并证明了这个代数非微扰地消失,从而验证了Witten的一个建议。

英文摘要:

Each flag manifold carries a unique algebra of chiral differential operators. Continuing along the lines of arXiv:0903.1281 we compute the vertex algebra structure on the cohomology of this algebra. The answer is: the tensor product of the center and a subalgebra; the center is isomorphic, as a commutative associative algebra, to the cohomology of the corresponding maximal nilpotent Lie algebra; the subalgebra is the vacuum module over the corresponding affine Lie algebra of critical level and 0 central character. We next find the Friedan-Martinec-Shenker-Borisov bosonization of the cohomology algebra in case of the projective line and show that this algebra vanishes nonperturbatively, thus verifying a suggestion by Witten.

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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