Pinnacle Advanced Physics
(ISSN: 2360-9443)
July 2015, Vol. 2 (4).
© Author(s) 2015. This work is distributed under the Creative Commons Attribution 3.0 License.
Research Article
The Spacetime Of A Cosmic String With Inner Structure In Gauss-Bonnet Gravity
Denis B. Barbosa1*, Jean Paulo Spinelly2
1*Instituto Federal de Educac¸a˜o Ciˆencia e Tecnologia da Para´ıba,
2Universidade Estadual da Para´ıba,
Accepted 20 June, 2015; Available Online 31 July, 2015.
In this paper we obtain the spacetime of a cosmic
string with inner structure of r0
radius, using modified gravity of Gauss-Bonnet
(GB). The Gauss-Bonnet gravity modifies the
Einstein-Hilbert scalar incorporating higher-order
terms on action. We analyzed the string’s space-time
inside and outside of her core, inside r < r0,
we will assume that the energy distribution of the
cosmic string is constant, σ = σ0,
and outside null, σ = 0, for both we
determined the solution by using a specific form
of the Gauss-Bonnet scalar, f (G)= α Gn α
being a constant and n an integer. [
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Abstract: