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arXiv 0708.0955hep-thmath-phmath.DGmath.MP
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形式Maurer-Cartan结构:从CFT到经典场方程

Formal Maurer-Cartan Structures: from CFT to Classical Field Equations

Anton M. Zeitlin

摘要:

我们展示了如何著名的经典场方程,如爱因斯坦和杨米尔斯的,这是作为某些二维理论的共形不变性条件,扩展到二阶的形式参数,可以重新制定为广义/形式的Maurer-Cartan方程(GMC),其中的微分是弦论的BRST运营商。我们引入了GMC中存在的双线性操作,并研究了它们的性质,从而找到了相应的Einstein方程和Yang-Mills方程的对称性,这些对称性与Einstein方程和Yang-Mills方程的对称性和规范对称性是一致的.

英文摘要:

We show how the well-known classical field equations as Einstein and Yang-Mills ones, which arise as the conformal invariance conditions of certain two-dimensional theories, expanded up to the second order in the formal parameter, can be reformulated as Generalized/formal Maurer-Cartan equations (GMC), where the differential is the BRST operator of String theory. We introduce the bilinear operations which are present in GMC, and study their properties, allowing us to find the symmetries of the resulting equations which will be naturally identified with the diffeomorphism and gauge symmetries of Einstein and Yang-Mills equations correspondingly.

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