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arXiv 1706.07089hep-thmath.DG
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双场论的广义运动学

Generalised Kinematics for Double Field Theory

Laurent Freidel, Felix J. Rudolph, David Svoboda

摘要:

我们在$2d$维仿厄米流形$(\mathcal{P},η,ω)$上建立了双场论的运动学推广,其中$O(d,d)$度量$η$由几乎辛的二形式$ω$补充. $η$和$ω$一起定义了一个几乎双拉格朗日结构$K$,它将切丛$T\mathcal{P}=L\oplus\tilde{L}$分裂成两个拉格朗日子空间。本文构造了$T\mathcal{P}$上Leibniz代数胚的一个标准联络和相应的广义李导数.我们发现可积性条件下的对称代数关闭一般$η$和$ω$,即使他们不是平坦的和恒定的。因此,这种形式主义提供了双场论运动学结构的概括。我们还表明,这种形式主义允许一个调和和统一的双场论与广义几何是彻底讨论。

英文摘要:

We formulate a kinematical extension of Double Field Theory on a $2d$-dimensional para-Hermitian manifold $(\mathcal{P},η,ω)$ where the $O(d,d)$ metric $η$ is supplemented by an almost symplectic two-form $ω$. Together $η$ and $ω$ define an almost bi-Lagrangian structure $K$ which provides a splitting of the tangent bundle $T\mathcal{P}=L\oplus\tilde{L}$ into two Lagrangian subspaces. In this paper a canonical connection and a corresponding generalised Lie derivative for the Leibniz algebroid on $T\mathcal{P}$ are constructed. We find integrability conditions under which the symmetry algebra closes for general $η$ and $ω$, even if they are not flat and constant. This formalism thus provides a generalisation of the kinematical structure of Double Field Theory. We also show that this formalism allows one to reconcile and unify Double Field Theory with Generalised Geometry which is thoroughly discussed.

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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