ANASTASIOS AVGOUSTIDIS ANASTASIOS.AVGOUSTIDIS@NOTTINGHAM.AC.UK
Associate Professor
Zipping and unzipping in string networks: dynamics of Y-junctions
Avgoustidis, Anastasios; Pourtsidou, Alkistis; Sakellariadou, Mairi
Authors
Alkistis Pourtsidou
Mairi Sakellariadou
Abstract
We study, within the Nambu-Goto approximation, the stability of massive string junctions under the influence of the tensions of three strings joining together in a Y-type configuration. The relative angle β between the strings at the junction is in general time dependent and its evolution can lead to zipping or unzipping of the three-string configuration. We find that these configurations are stable under deformations of the tension balance condition at the junction. The angle β relaxes at its equilibrium value and the junction grows relativistically. We then discuss other potential “unzipping agents” including monopole/string forces for long strings and curvature for loops, and we investigate specific solutions exhibiting decelerated zipping and unzipping of the Y junction. These results provide motivation for incorporating the effects of realistic string interactions in network evolution models with string junctions.
Citation
Avgoustidis, A., Pourtsidou, A., & Sakellariadou, M. (2015). Zipping and unzipping in string networks: dynamics of Y-junctions. Physical Review D, 91(2), Article 025022. https://doi.org/10.1103/PhysRevD.91.025022
Journal Article Type | Article |
---|---|
Publication Date | Jan 15, 2015 |
Deposit Date | Sep 29, 2015 |
Publicly Available Date | Sep 29, 2015 |
Journal | Physical Review D |
Print ISSN | 2470-0010 |
Electronic ISSN | 2470-0029 |
Publisher | American Physical Society |
Peer Reviewed | Peer Reviewed |
Volume | 91 |
Issue | 2 |
Article Number | 025022 |
DOI | https://doi.org/10.1103/PhysRevD.91.025022 |
Keywords | cosmic strings, string theory, string junctions |
Public URL | https://nottingham-repository.worktribe.com/output/743150 |
Publisher URL | http://journals.aps.org/prd/abstract/10.1103/PhysRevD.91.025022 |
Files
Yjunctions.pdf
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