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arXiv 0711.3498hep-th
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卡茨-穆迪代数与M-理论的联系

Connections between Kac-Moody algebras and M-theory

Paul P. Cook

摘要:

我们调查的动机和后果的猜想,卡茨-穆迪代数E11是M-理论的对称代数,我们开发的方法,以帮助进一步调查这一想法。工作所需的定义与李代数的抽象根系在审查导致了一个卡茨-穆迪代数的定义。E11猜想的动机和非线性实现的重力相关的猜想进行了说明。我们给出了一个初学者的指南,以产生与M理论相关的E11代数和与玻色弦论相关的K27代数,以及它们的l1表示。参考表的低级别根产生的伴随和L1表示这些代数。此外,一个特定的组元素,具有通用形式的所有G+代数,编码所有的半BPS膜解决方案的最大氧化超引力。特别分析的作用,时空签名的背景下,这个组元素和随后的分析类空膜的解决方案是来自同一解决方案生成组元素。最后对E_(11)的U-对偶电荷多重态的出现进行了评述。给出了求任意膜电荷多重态含量的一般公式,并证明了4、5、6、7、8维粒子和弦多重态的含量包含在E11的l1表示中.

英文摘要:

We investigate some of the motivations and consequences of the conjecture that the Kac-Moody algebra E11 is the symmetry algebra of M-theory, and we develop methods to aid the further investigation of this idea. The definitions required to work with abstract root systems of Lie algebras are given in review leading up to the definition of a Kac-Moody algebra. The motivations for the E11 conjecture are presented and the nonlinear realisation of gravity relevant to the conjecture is described. We give a beginner's guide to producing the algebras of E11, relevant to M-theory, and K27, relevant to the bosonic string theory, along with their l1 representations are constructed. Reference tables of low level roots are produced for both the adjoint and l1 representations of these algebras. In addition a particular group element, having a generic form for all G+++ algebras, is shown to encode all the half-BPS brane solutions of the maximally oxidised supergravities. Special analysis is given to the role of space-time signature in the context of this group element and subsequent to this analysis spacelike brane solutions are derived from the same solution generating group element. Finally the appearance of U-duality charge multiplets from E11 is reviewed. General formulae for finding the content of arbitrary brane charge multiplets are given and the content of the particle and string multiplets in dimensions 4,5,6,7 and 8 is shown to be contained in the l1 representation of E11.

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