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arXiv 1003.1350math.DGmath-phmath.MP
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关于Courant代数胚的高阶类似

On higher analogues of Courant algebroids

Yanhui Bi, Yunhe Sheng

摘要:

本文研究了$m$维流形的直和丛$TM\oplus\wedge^nT^*M$上的Courant代数体结构的高级模拟的代数性质。作为应用,我们重新审视Nambu-Poisson结构和多辛结构。证明了$(n+1)$ -向量场$π$的图在高阶Dorfman括号下是闭的当且仅当$π$是Nambu-Poisson结构.因此,在$\wedge^nT^*M$上存在诱导的Leibniz代数体结构。$(n+1)$型$ω$的图在高阶Dorfman括号下是闭的当且仅当$ω$是$n$阶的准多辛结构,即$\dMω=0$ .此外,在容许丛$A\subset\wedge^{n}T^*M$上还存在一个李代数体结构.特别地,对于2-plectic结构,它导出了\cite{baez:classicalstring}中给出的Lie 2-代数结构.

英文摘要:

In this paper, we study the algebraic properties of the higher analogues of Courant algebroid structures on the direct sum bundle $TM\oplus\wedge^nT^*M$ for an $m$-dimensional manifold. As an application, we revisit Nambu-Poisson structures and multisymplectic structures. We prove that the graph of an $(n+1)$-vector field $π$ is closed under the higher-order Dorfman bracket iff $π$ is a Nambu-Poisson structure. Consequently, there is an induced Leibniz algebroid structure on $\wedge^nT^*M$. The graph of an $(n+1)$-form $ω$ is closed under the higher-order Dorfman bracket iff $ω$ is a premultisymplectic structure of order $n$, i.e. $\dMω=0$. Furthermore, there is a Lie algebroid structure on the admissible bundle $A\subset\wedge^{n}T^*M$. In particular, for a 2-plectic structure, it induces the Lie 2-algebra structure given in \cite{baez:classicalstring}.

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