Mass and spin for classical strings in dS3

Abstract We demonstrate that all rigidly rotating strings with center of mass at the origin of the dS3 static patch satisfy the Higuchi bound. This extends the observation of Noumi et al. for the open GKP-like string to all solutions of the Larsen-Sanchez class. We argue that strings violating the b...

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Main Author: Klaas Parmentier
Format: Article
Language:English
Published: SpringerOpen 2021-05-01
Series:Journal of High Energy Physics
Subjects:
Online Access:https://doi.org/10.1007/JHEP05(2021)277
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author Klaas Parmentier
author_facet Klaas Parmentier
author_sort Klaas Parmentier
collection DOAJ
description Abstract We demonstrate that all rigidly rotating strings with center of mass at the origin of the dS3 static patch satisfy the Higuchi bound. This extends the observation of Noumi et al. for the open GKP-like string to all solutions of the Larsen-Sanchez class. We argue that strings violating the bound end up expanding towards the horizon and provide a numerical example. Adding point masses to the open string only increases the mass/spin ratio. For segmented strings, we write the conserved quantities, invariant under Gubser’s algebraic evolution equation, in terms of discrete lightcone coordinates describing kink collisions. Randomly generated strings are found to have a tendency to escape through the horizon that is mostly determined by their energy. For rapidly rotating segmented strings with mass/spin < 1, the kink collisions eventually become causally disconnected. Finally we consider the scenario of cosmic strings captured by a black hole in dS and find that horizon friction can make the strings longer.
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spelling doaj.art-324c2321e0ce448da9b1207ba9a68b3e2022-12-21T21:09:00ZengSpringerOpenJournal of High Energy Physics1029-84792021-05-012021513010.1007/JHEP05(2021)277Mass and spin for classical strings in dS3Klaas Parmentier0Department of Physics, Columbia UniversityAbstract We demonstrate that all rigidly rotating strings with center of mass at the origin of the dS3 static patch satisfy the Higuchi bound. This extends the observation of Noumi et al. for the open GKP-like string to all solutions of the Larsen-Sanchez class. We argue that strings violating the bound end up expanding towards the horizon and provide a numerical example. Adding point masses to the open string only increases the mass/spin ratio. For segmented strings, we write the conserved quantities, invariant under Gubser’s algebraic evolution equation, in terms of discrete lightcone coordinates describing kink collisions. Randomly generated strings are found to have a tendency to escape through the horizon that is mostly determined by their energy. For rapidly rotating segmented strings with mass/spin < 1, the kink collisions eventually become causally disconnected. Finally we consider the scenario of cosmic strings captured by a black hole in dS and find that horizon friction can make the strings longer.https://doi.org/10.1007/JHEP05(2021)277Bosonic StringsLong stringsString theory and cosmic strings
spellingShingle Klaas Parmentier
Mass and spin for classical strings in dS3
Journal of High Energy Physics
Bosonic Strings
Long strings
String theory and cosmic strings
title Mass and spin for classical strings in dS3
title_full Mass and spin for classical strings in dS3
title_fullStr Mass and spin for classical strings in dS3
title_full_unstemmed Mass and spin for classical strings in dS3
title_short Mass and spin for classical strings in dS3
title_sort mass and spin for classical strings in ds3
topic Bosonic Strings
Long strings
String theory and cosmic strings
url https://doi.org/10.1007/JHEP05(2021)277
work_keys_str_mv AT klaasparmentier massandspinforclassicalstringsinds3