On Bianchi-I cosmic strings coupled with Maxwell fields in bimetric relativity

Pramana ◽  
2003 ◽  
Vol 61 (4) ◽  
pp. 655-658
Author(s):  
V. Mahurpawar ◽  
S. D. Deo
Keyword(s):  
Cosmic Strings ◽  
Bianchi I ◽  
Maxwell Fields ◽  
Bimetric Relativity

Evolution of Bianchi I magnetized cosmic strings in Brans–Dicke gravity

2013 ◽  
Vol 88 (2) ◽  
pp. 025901 ◽  
Author(s):  
M Sharif ◽  
Saira Waheed
Keyword(s):  
Cosmic Strings ◽  
Bianchi I

scholarly journals Mass and spin for classical strings in dS3

2021 ◽  
Vol 2021 (5) ◽  
Author(s):  
Klaas Parmentier
Keyword(s):  
Black Hole ◽  
Evolution Equation ◽  
Cosmic Strings ◽  
Center Of Mass ◽  
Open String ◽  
Conserved Quantities ◽  
Numerical Example ◽  
All Solutions

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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