Spherically symmetric viscous cosmology in Brans-Dicke theory

被引：0

作者：

Hatkar, S. P. ^{[1
]}

Karhale, G. D. ^{[1
]}

Katore, S. D. ^{[2
]}

机构：

[1] AES Arts Commerce & Sci Coll, Dept Math, Hingoli 431513, India

[2] St Gadge Baba Amravati Univ, Dept Math, Amravati 444602, India

来源：

PRAMANA-JOURNAL OF PHYSICS | 2023年 / 97卷 / 01期

关键词：

Brans-Dicke theory; viscosity; spherical symmetry; 98; 80; Cq; JK; 66; 20; -d; BIRKHOFF-TYPE THEOREM; WORMHOLES; MATTER; TIME; VIII;

D O I：

10.1007/s12043-022-02495-9

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In the present paper, we investigated spherically symmetric space-time for bulk viscosity in the context of Brans-Dicke theory (BBT) of gravitation. It is observed that the Universe is accelerating for small values of expansion scalar and decelerating for large values of expansion scalar. The coefficient of bulk viscosity is negative, the wormhole is compact in Case I whereas in Case II, it is proportional to energy density and positive and the wormhole is non-compact. The required conditions for the wormhole are satisfied.

引用

页数：9

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