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Abelian cosmic string in the Starobinsky model of gravity

Graca, J P Morais

Classical and quantum gravity, 2016-03, Vol.33 (5), p.55004-55014 [Periódico revisado por pares]

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Título:
Abelian cosmic string in the Starobinsky model of gravity
Autor: Graca, J P Morais
Assuntos: Abelian-Higgs Model ; cosmic strings ; Density ; Gravitation ; Mathematical models ; numerical solutions ; Quantum gravity ; Starobinsky model ; Strings
É parte de: Classical and quantum gravity, 2016-03, Vol.33 (5), p.55004-55014
Notas: CQG-101917.R1
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SourceType-Scholarly Journals-1
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Descrição: In this paper, I analyze numerically the behaviour of the solutions corresponding to an Abelian string in the framework of the Starobinsky model. The role played by the quadratic term in the Lagrangian density of this model is emphasized and the results are compared with the corresponding ones obtained in the framework of Einstein's theory of gravity. I have found that the angular deficit generated by the string is lowered as the parameter increases, allowing a well-behaved spacetime for a large range of values of the symmetry-breaking scale.
Editor: IOP Publishing
Idioma: Inglês

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