Gravitational Field of a Global Monopole in a Modified Gravity
| Autor: | Caramês, T. R. P., de Mello, E. R. Bezerra, Guimarães, M. E. X. |
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| Rok vydání: | 2011 |
| Předmět: | |
| Zdroj: | International Journal of Modern Physics: Conference Series, v. 03, p. 446-454, 2011 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1142/S2010194511000961 |
| Popis: | In this paper we analyze the gravitational field of a global monopole in the context of $f(R)$ gravity. More precisely, we show that the field equations obtained are expressed in terms of $F(R)=\frac{df(R)}{dR}$. Since we are dealing with a spherically symmetric system, we assume that $F(R)$ is a function of the radial coordinate only. Moreover, adopting the weak field approximation, we can provide all components of the metric tensor. A comparison with the corresponding results obtained in General Relativity and in the Brans-Dicke theory is also made. Comment: 9 pages, work presented in the 8th Alexander Friedmann International Seminar on Gravitation and Cosmology, in Rio de Janeiro, 30/05 to 03/06/2011 |
| Databáze: | arXiv |
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