Evolution of semilocal string networks: II. Velocity estimators
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 int...
| Main Authors: | , , , , |
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| Format: | Article |
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American Physical Society
2017
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| Online Access: | https://eprints.nottingham.ac.uk/43460/ |
| _version_ | 1848796692903624704 |
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| author | Lopez-Eiguren, A. Urrestilla, J. Achúcarro, A. Avgoustidis, Anastasios Martins, C.J.A.P. |
| author_facet | Lopez-Eiguren, A. Urrestilla, J. Achúcarro, A. Avgoustidis, Anastasios Martins, C.J.A.P. |
| author_sort | Lopez-Eiguren, A. |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | 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. |
| first_indexed | 2025-11-14T19:52:02Z |
| format | Article |
| id | nottingham-43460 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:52:02Z |
| publishDate | 2017 |
| publisher | American Physical Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-434602020-05-04T18:56:54Z https://eprints.nottingham.ac.uk/43460/ Evolution of semilocal string networks: II. Velocity estimators Lopez-Eiguren, A. Urrestilla, J. Achúcarro, A. Avgoustidis, Anastasios Martins, C.J.A.P. 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. American Physical Society 2017-07-24 Article PeerReviewed Lopez-Eiguren, A., Urrestilla, J., Achúcarro, A., Avgoustidis, Anastasios and Martins, C.J.A.P. (2017) Evolution of semilocal string networks: II. Velocity estimators. Physical Review D, 96 . 023526/1-023526/20. ISSN 2470-0029 https://journals.aps.org/prd/abstract/10.1103/PhysRevD.96.023526 doi:10.1103/PhysRevD.96.023526 doi:10.1103/PhysRevD.96.023526 |
| spellingShingle | Lopez-Eiguren, A. Urrestilla, J. Achúcarro, A. Avgoustidis, Anastasios Martins, C.J.A.P. Evolution of semilocal string networks: II. Velocity estimators |
| title | Evolution of semilocal string networks: II. Velocity estimators |
| title_full | Evolution of semilocal string networks: II. Velocity estimators |
| title_fullStr | Evolution of semilocal string networks: II. Velocity estimators |
| title_full_unstemmed | Evolution of semilocal string networks: II. Velocity estimators |
| title_short | Evolution of semilocal string networks: II. Velocity estimators |
| title_sort | evolution of semilocal string networks: ii. velocity estimators |
| url | https://eprints.nottingham.ac.uk/43460/ https://eprints.nottingham.ac.uk/43460/ https://eprints.nottingham.ac.uk/43460/ |