Scaling properties of cosmic (super)string networks

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

Martins, C.J.A.P.^1

Centro de Astrofisica, Universidade Do Porto, Rua das Estrelas, Porto

4150-762, Portugal^1

关键词: Analytic modelling;    Network dynamics;    Scaling properties;    State of the art;    String network;    String tension;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/544/1/012026/pdf
DOI  :  10.1088/1742-6596/544/1/012026

来源: IOP

【 摘 要 】

I use a combination of state-of-the-art numerical simulations and analytic modelling to discuss the scaling properties of cosmic defect networks, including superstrings. Particular attention is given to the role of extra degrees of freedom in the evolution of these networks. Compared to the 'plain vanilla' case of Goto-Nambu strings, three such extensions play important but distinct roles in the network dynamics: the presence of charges/currents on the string worldsheet, the existence of junctions, and the possibility of a hierarchy of string tensions. I also comment on insights gained from studying simpler defect networks, including Goto-Nambu strings themselves, domain walls and semilocal strings.