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Supermassive cosmic string compactifications
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DOI：10.1088/1475-7516/2014/06/001.png)
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摘要
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The space-time dimensions transverse to a static straight cosmic string with a sufficiently large tension (supermassive cosmic strings) are compact and typically have a singularity at a finite distance form the core. In this paper, we discuss how the presence of multiple supermassive cosmic strings in the 4d Abelian-Higgs model can induce the spontaneous compactification of the transverse space and explicitly construct solutions where the gravitational background becomes regular everywhere. We discuss the embedding of this model in N = 1 supergravity and show that some of these solutions are half-BPS, in the sense that they leave unbroken half of the supersymmetries of the model.
Keyword:
Cosmic strings
domain walls
monopoles
extra dimensions
gravity
physics of the early universe
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IF:
5.9
论文数:
1.3W
被引数:
4.7W
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