Cylindrically symmetric solutions in f(R,T) gravity
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- 作者：M. Farasat Shamir (1)
Zahid Raza (1)
1. Department of Sciences and Humanities ; National University of Computer and Emerging Sciences ; Lahore Campus ; Lahore ; Pakistan - 关键词：f(R ; T) gravity ; Cylindrically symmetric spacetime
- 刊名：Astrophysics and Space Science
- 出版年：2015
- 出版时间：March 2015
- 年：2015
- 卷：356
- 期：1
- 页码：111-118
- 全文大小：402 KB
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- 刊物主题：Physics
Astronomy - 出版者：Springer Netherlands
- ISSN：1572-946X
文摘
The main purpose of this paper is to investigate the exact solutions of cylindrically symmetric spacetime in the context of f(R,T) gravity (Harko et al. in Phys. Rev. D 84:024020, 2011), where f(R,T) is an arbitrary function of Ricci scalar R and trace of the energy momentum tensor T. We explore the exact solutions for two different classes of f(R,T) models. The first class f(R,T)=R+2f(T) yields a solution which corresponds to an exterior metric of cosmic string while the second class f(R,T)=f 1(R)+f 2(T) provides an additional solution representing a non-null electromagnetic field. The energy densities and corresponding functions for f(R,T) models are evaluated in each case.