Skip to main content

Research Repository

See what's under the surface

Advanced Search

Evolution of semilocal string networks: II. Velocity estimators

Lopez-Eiguren, A.; Urrestilla, J.; Achúcarro, A.; Avgoustidis, Anastasios; Martins, C.J.A.P.

Authors

A. Lopez-Eiguren

J. Urrestilla

A. Achúcarro

Anastasios Avgoustidis anastasios.avgoustidis@nottingham.ac.uk

C.J.A.P. Martins Carlos.Martins@astro.up.pt



Abstract

We continue a comprehensive numerical study of semilocal string networks and their cosmological evolution. These can be thought of as hybrid networks comprised of (non-topological) string segments, whose core structure is similar to that of Abelian Higgs vortices, and whose ends have long--range interactions and behaviour similar to that of global monopoles. Our study provides further evidence of a linear scaling regime, already reported in previous studies, for the typical length scale and velocity of the network. We introduce a new algorithm to identify the position of the segment cores. This allows us to determine the length and velocity of each individual segment and follow their evolution in time. We study the statistical distribution of segment lengths and velocities for radiation- and matter-dominated evolution in the regime where the strings are stable. Our segment detection algorithm gives higher length values than previous studies based on indirect detection methods. The statistical distribution shows no evidence of (anti)correlation between the speed and the length of the segments.

Journal Article Type Article
Publication Date Jul 24, 2017
Journal Physical Review D
Print ISSN 2470-0010
Electronic ISSN 2470-0029
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 96
Article Number 023526
APA6 Citation Lopez-Eiguren, A., Urrestilla, J., AchĂșcarro, A., Avgoustidis, A., & Martins, C. (2017). Evolution of semilocal string networks: II. Velocity estimators. Physical Review D, 96, doi:10.1103/PhysRevD.96.023526
DOI https://doi.org/10.1103/PhysRevD.96.023526
Publisher URL https://journals.aps.org/prd/abstract/10.1103/PhysRevD.96.023526
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf

Files

semilocal.pdf (1.2 Mb)
PDF

Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf


semilocalSupplemental.pdf (1.2 Mb)
PDF

Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





You might also like



Downloadable Citations

;