Cosmic superstring networks with Y-junctions: Evolution, B-modes and gravitational waves

Tangled Magnetic Fields in Astro- and Plasma Physics; Quantised Flux in Tightly Knotted and Linked Systems

Steer, D.A.^1,2

APC (UMR 7164-APC, Univ Paris Diderot, CNRS/IN2P3, Sorbonne Paris Cité, France^1

10 rue Alice Domon et Léonie Duquet, Paris Cedex 13

75205, France^2

关键词: String tension;    Y-junctions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/544/1/012028/pdf
DOI  :  10.1088/1742-6596/544/1/012028

来源: IOP

【 摘 要 】

We review the properties and evolution of strings networks containing both a spectrum of string tensions as well as Y-junctions, namely a point at which three different strings meet. Such a situation is expected in cosmic superstring networks, where the tension of the different strings is determined by the fundamental string tension μFas well as the string coupling gs. We discuss evolution of such a network, and the proliferation of kinks as they travel through junctions. These effects can leave observational signals on B-modes and gravitational waves, which can then in turn constrain the underlying parameters of the theory.