Wormhole models in R2-gravity for f(R, T) theory with a hybrid shape function

被引:8
作者
Mishra, Ambuj Kumar [1 ]
Sharma, Umesh Kumar [1 ]
机构
[1] GLA Univ, Inst Appl Sci & Humanities, Dept Math, Mathura 281406, Uttar Pradesh, India
关键词
f(R; T); gravity; wormholes; energy conditions; shape function; modified gravity; cosmology; THIN-SHELL WORMHOLES; F R; MODIFIED GRAVITY; GEOMETRIES;
D O I
10.1139/cjp-2020-0485
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
In the present paper, we explore wormholes in R-2-gravity within the f(R, T) formalism by using b(r) = re(r0-r) (hybrid shape function). The functional form f(R, T) = R + alpha R-2 + lambda T is considered where R and T are the Ricci scalar and trace of the energy-momentum tensor, respectively, and alpha and lambda are controlling parameters. With the help of the EoS, v = p(r)/rho, geometric behavior is analyzed and energy conditions are discussed in the anisotropic scenario. In this investigation, significant contribution of the quadratic geometric term (R-2) and linear trace term (T) are shown to validate energy conditions for the specific shape function and analyze wormhole solutions in the absence of exotic matter. Also, we observe that the energy conditions are valid in the whole range (r >= r(0)) in the case of constant redshift function with this shape function.
引用
收藏
页码:481 / 489
页数:9
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