Expanding and nonexpanding conformal wormholes in scalar-tensor theory

被引：5

作者：

Dogru, Melis Ulu ^{[1
,2
]}

Yilmaz, Ihsan ^{[2
,3
,4
]}

机构：

[1] Canakkale Onsekiz Mart Univ, Dept Phys, Arts & Sci Fac, TR-17020 Canakkale, Turkey

[2] Canakkale Onsekiz Mart Univ, Astrophys Res Ctr, TR-17020 Canakkale, Turkey

[3] Canakkale Onsekiz Mart Univ, Dept Comp Engn, Fac Engn, TR-17020 Canakkale, Turkey

[4] Maltepe Univ, Dept Comp Engn, Fac Engn, Istanbul, Turkey

来源：

INTERNATIONAL JOURNAL OF MODERN PHYSICS D | 2015年 / 24卷 / 08期

关键词：

Scalar-tensor theories; anisotropic fluid; spherically symmetry; wormholes; Casimir effect for macroscopic systems; big rip singularity; BRANS-DICKE WORMHOLES; LORENTZIAN WORMHOLES; TELEPARALLEL THEORY; ENERGY; FLUID;

D O I：

10.1142/S0218271815500649

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study spherically symmetric spacetime with anisotropic fluid in the scalar-tensor theory of gravity based on Lyra geometry. We suggest two different solutions of field equations for the theory by using Casimir effect. Obtained static and nonstatic solutions are similar to nonexpanding Lorentzian wormhole and expanding FRW-type wormhole, respectively. Furthermore, we study singularities of obtained solutions. We emphasize whether the expanding and nonexpanding wormholes conform with Big Rip or Big Crunch scenarios. Also, physical and geometrical properties of the solutions have been discussed.

引用

页数：16

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