Modeling of traversable wormholes in exponential f(R, T) gravity

被引:14
|
作者
Chawla, Chanchal [1 ]
Dixit, Archana [2 ]
Pradhan, Anirudh [2 ]
机构
[1] Punjabi Univ, Dept Distance Educ, Patiala 147002, Punjab, India
[2] GLA Univ, Inst Appl Sci & Humanities, Dept Math, Mathura 281406, Uttar Pradesh, India
关键词
traversable wormholes; f(R; T); gravity; energy conditions; Schwarzschild metric; anisotropic parameter; BIANCHI TYPE-I; DARK ENERGY; F R;
D O I
10.1139/cjp-2020-0556
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
In the present communication, we have studied the existence of wormholes described by a logarithmic shape function, in the exponential f(R, T) gravity given by f(R, 7) = R + 2 xi e(zeta t) where xi and zeta are arbitrary constants, under three different sets of physical constraints. The logarithmic shape function is well behaved, satisfying all the necessary constraints for traversable and asymptotically flat wormholes. The obtained wormhole solutions are analyzed from the energy conditions for different values of involved physical constants. It has been observed that our proposed shape function for the exponential form of f(R, T) gravity represents the existence of exotic matter with a standard violation of the NEC. Moreover, for the trace T = 0, for the general relativity case with R being replaced by R + 2, the wormhole geometry has been analyzed to prove the existence of exotic matter. Further, the behaviour of physical parameters, such as the energy density rho, the trace T, and anisotropy parameter Delta, describing the geometry of the universe has been presented with the help of graphs.
引用
收藏
页码:634 / 645
页数:12
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