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arXiv 0712.0922math.RTmath.QA
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超越与Clifford代数

Transgression and Clifford algebras

Rudolf Philippe Rohr

摘要:

设$W$是一个微分(不一定是交换的)代数,它带有一个具有齐次生成元$p_1, >..., p_r$的多项式代数$SP$的自由作用。证明了对于$W$非循环,商$H(W/<p_1, ..., p_r>)$的上同调同构于Clifford代数$\text{Cl}(P,B)$,其中(可能退化的)双线性型$B$依赖于$W$ .这一观察是一个模拟的旧结果的博雷尔在一个非交换的背景下。作为应用,我们研究了量子化Weil代数$\qWg = \Ug \otimes \Clg$给出的$W$对于$\Lieg$为约化李代数的情形.由此产生的上同调的规范Weil微分给出了一个Clifford代数,但双线性型消失的空间上的原始不变量的半单部分。作为一个应用,我们考虑变形Weil微分(以下Freed,霍普金斯和Teleman)。

英文摘要:

Let $W$ be a differential (not necessarily commutative) algebra which carries a free action of a polynomial algebra $SP$ with homogeneous generators $p_1, >..., p_r$. We show that for $W$ acyclic, the cohomology of the quotient $H(W/<p_1, ..., p_r>)$ is isomorphic to a Clifford algebra $\text{Cl}(P,B)$, where the (possibly degenerate) bilinear form $B$ depends on $W$. This observation is an analogue of an old result of Borel in a non-commutative context. As an application, we study the case of $W$ given by the quantized Weil algebra $\qWg = \Ug \otimes \Clg$ for $\Lieg$ a reductive Lie algebra. The resulting cohomology of the canonical Weil differential gives a Clifford algebra, but the bilinear form vanishes on the space of primitive invariants of the semi-simple part. As an application, we consider the deformed Weil differential (following Freed, Hopkins and Teleman).

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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