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D= 11 cosmologies with teleparallel structure

机译:D = 11个宇宙宇宙观,带拍摄结构

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The presence of additional compact dimensions in cosmological models is studied in the context of modified teleparallel theories of gravity. We focus the analysis on eleven dimensional spacetimes, where the seven dimensional extra dimensions are compactified. In particular, and due to the importance that global vector fields play within the conceptual body of teleparallel modified gravity models, we consider the additional dimensions to be products of parallelizable spheres. The global vector fields characterizing the different topologies are obtained, as well as the equations of motion associated to them. Using global dynamical system techniques, we discuss some physical consequences arising because of the existence of the extra dimensions. In particular, the possibility of having an early inflationary epoch driven by the presence of extra dimensions without other matter sources is discussed.
机译:在修改的倾斜重力理论的背景下,研究了宇宙图中额外紧凑的尺寸。 我们专注于十一维空间的分析,其中七维额外尺寸被压实。 特别是,由于全球传染媒介域在概念性体内在互联修改重力模型中发挥的重要性,我们考虑了额外的尺寸是并行球体的产品。 获得表征不同拓扑的全局矢量字段,以及与它们相关联的运动方程。 使用全球动态系统技术,我们讨论了由于额外尺寸存在而产生的一些物理后果。 特别地,讨论了通过没有其他物质来源的额外尺寸的存在而具有早期通胀时期的可能性。

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