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arXiv 0906.3116hep-th
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费米子Kac-Moody台球与超引力

Fermionic Kac-Moody Billiards and Supergravity

Thibault Damour, Christian Hillmann

摘要:

我们研究的“费米子台球”,即引力子的混沌动力学,出现在近类空奇异极限的11维超引力和它的维截断(特别是四维简单超引力)。通过利用引力陪集对应,我们表明引力子的台球动力学是由E(10)Weyl群的“自旋扩展”描述的,即作为沿着双曲卡茨-穆迪代数E(10)的最大紧致子代数K(E(10))的某些单根相关生成元的90度“向量旋量旋转”的乘积。结合玻色子台球和费米子台球的“超级台球”被发现具有非常简单的结构,它与E(10)的10维洛伦兹外尔腔中传播的偏振光子有着惊人的相似之处。

英文摘要:

We study the "fermionic billiards", i.e. the chaotic dynamics of the gravitino, that arise in the near-spacelike-singularity limit of eleven-dimensional supergravity and of its dimensional truncations (notably four-dimensional simple supergravity). By exploiting the gravity-coset correspondence, we show that the billiard dynamics of the gravitino is described by a `spin extension' of the E(10) Weyl group, namely as a product of 90 degree `vector-spinor rotations' along certain simple-root-related generators of the maximal compact subalgebra K(E(10)) of the hyperbolic Kac--Moody algebra E(10). The `super-billiard' that combines the bosonic and fermionic billiards is found to have a remarkably simple structure, which exhibits a striking analogy with a polarized photon propagating in the ten-dimensional Lorentzian Weyl chamber of E(10).

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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