Publication: Cosmic Necklaces from String Theory

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Title	Cosmic Necklaces from String Theory
Authors/Editors*	Louis Leblond and Mark Wyman
Where published*	Physical Review D
How published*	Journal
Year*	2007
Volume	75
Number
Pages	123522
Publisher
Keywords
Link	http://arxiv.org/abs/astro-ph/0701427
Abstract	We present the properties of a cosmic superstring network in the scenario of flux compactification. An infinite family of strings, the (p,q)-strings, are allowed to exist. The flux compactification leads to a string tension that is periodic in 'p'. Monopoles, appearing here as beads on a string, are formed in certain interactions in such networks. This allows bare strings to become cosmic necklaces. We study network evolution in this scenario, outlining what conditions are necessary to reach a cosmologically viable scaling solution. We also analyze the physics of the beads on a cosmic necklace, and present general conditions for which they will be cosmologically safe, leaving the network's scaling undisturbed. In particular, we find that a large average loop size is sufficient for the beads to be cosmologically safe. Finally, we argue that loop formation will promote a scaling solution for the interbead distance in some situations.