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arXiv 0910.1444hep-th
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超引力理论中的Kac-Moody代数结构

Kac-Moody algebraic structures in supergravity theories

Nassiba Tabti

摘要:

近年来的大量研究表明,卡茨-穆迪代数在某些超引力理论的代数结构中起着重要的作用。这些代数将生成无限维对称群。这种对称性的可能存在促使这些理论重新表述为基于卡茨-穆迪对称群的非线性西格玛模型。这样的模型被构造在参数化相应代数的生成元的无穷多个字段方面。如果这些约束的对称性确实是某些超引力理论的实际对称性,那么一个需要阐明的有意义的问题将是对这个无限场塔的解释。另一个实质性的问题是要找到sigma-模型(它们在约束对称下是显式不变的)和这些相应的时空理论之间的对应关系。本论文的主题是在特定情况下解决这些问题。

英文摘要:

A lot of developments made during the last years show that Kac-Moody algebras play an important role in the algebraic structure of some supergravity theories. These algebras would generate infinite-dimensional symmetry groups. The possible existence of such symmetries have motivated the reformulation of these theories as non-linear sigma-models based on the Kac-Moody symmetry groups. Such models are constructed in terms of an infinite number of fields parametrizing the generators of the corresponding algebra. If these conjectured symmetries are indeed actual symmetries of certain supergravity theories, a meaningful question to elucidate will be the interpretation of this infinite tower of fields. Another substantial problem is to find the correspondence between the sigma-models, which are explicitly invariant under the conjectured symmetries, and these corresponding space-time theories. The subject of this thesis is to address these questions in certain cases.

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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