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arXiv 2210.00548math.DGgr-qchep-thmath-phmath.MP
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Pre-Metric-Bourbaki代数胚:M-理论的Cartan演算

Pre-Metric-Bourbaki Algebroids: Cartan Calculus for M-Theory

Aybike Çatal-Özer, Tekin Dereli, Keremcan Doğan

摘要:

弦理论和M理论似乎需要微分几何的一般概念的推广。这样的推广通常涉及将切丛推广到更大的具有各种代数体结构的向量丛。最一般的几何方案还没有得到很好的理解,这样的代数体结构的统一框架是必要的。我们在本文中的目的是提出这样一个总体框架。我们的策略是遵循柯朗代数胚的公理定义层次:almost-Courant - metric - pre-Courant - Courant。特别是,我们专注于括号的对称部分和度量不变性,并试图以尽可能普遍的方式来理解它们。这些想法使我们定义新的代数体结构,我们称之为布尔巴基和度量布尔巴基代数体。对于精确预度量-Bourbaki代数胚的一个特殊情形,我们构造了映射,推广了外导数、李导数和内积的Cartan演算。这是通过一个反向数学分析的塞维拉分类的确切柯朗代数胚。抽象这些地图的关键属性,我们定义的概念布尔巴基预演算。相反,给定一个布尔巴基预演算,我们构造一个预度量-布尔巴基代数胚与一个类似于Dorfman括号的标准括号。我们证明了任何满足一定条件的精确预度量布尔巴基代数胚都有一个标准括号的扭曲版本。我们证明,许多代数胚从文献中的例子,这些新的代数胚。我们构造的一个直接推广可以通过用李代数体A代替切丛来完成。这一步允许我们定义A-Bourbaki代数胚和Bourbaki A-预演算,并扩展我们的结果,同时证明许多其他代数胚从文献中适合这个框架。

英文摘要:

String and M theories seem to require generalizations of usual notions of differential geometry. Such generalizations usually involve extending the tangent bundle to larger vector bundles equipped with various algebroid structures. The most general geometric scheme is not well understood yet, and a unifying framework for such algebroid structures is needed. Our aim in this paper is to propose such a general framework. Our strategy is to follow the hierarchy of defining axioms for a Courant algebroid: almost-Courant - metric - pre-Courant - Courant. In particular, we focus on the symmetric part of the bracket and the metric invariance property, and try to make sense of them in a manner as general as possible. These ideas lead us to define new algebroid structures which we dub Bourbaki and metric-Bourbaki algebroids. For a special case of exact pre-metric-Bourbaki algebroids, we construct maps which generalize the Cartan calculus of exterior derivative, Lie derivative and interior product. This is done by a reverse-mathematical analysis of Severa classification of exact Courant algebroids. Abstracting crucial properties of these maps, we define the notion of Bourbaki pre-calculus. Conversely, given a Bourbaki pre-calculus, we construct a pre-metric-Bourbaki algebroid with a standard bracket analogous to Dorfman bracket. We prove that any exact pre-metric-Bourbaki algebroid satisfying certain conditions has to have a bracket that is the twisted version of the standard bracket. We prove that many algebroids from the literature are examples of these new algebroids. One straightforward generalization of our constructions might be done by replacing the tangent bundle with a Lie algebroid A. This step allows us to define A-Bourbaki algebroids and Bourbaki A-pre-calculus, and extend our results, while proving many other algebroids from the literature fit into this framework.

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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