Static Axially Symmetric Models and Structure Scalars in Self-Interacting Brans–Dicke Gravity

被引：0

作者：

MSharif ^{[1
]}

Rubab Manzoor ^{[1
,2
]}

机构：

[1] Department of Mathematics, University of the Punjab, Quaid-e-Azam Campus

[2] Department of Mathematics, University of Management and Technology, Johar Town Campus

来源：

CommunicationsinTheoreticalPhysics | 2017年 / 68卷 / 07期

关键词：

self-interacting Brans–Dicke Theory; self-gravitating systems; structure scalars; Non-spherical sources; interior solutions;

D O I：

暂无

中图分类号：

O41 [理论物理学];

学科分类号：

070201 ;

摘要：

This paper investigates static axially symmetric models in self-interacting Brans–Dicke gravity. We discuss physically feasible sources of models, derive field equations as well as evolution equations from Bianchi identities and construct structure scalars. Using these scalars and evolution equations, the inhomogeneity factors of the system are evaluated. It is found that structure scalars related to double dual of Riemann tensor control the density inhomogeneity.Finally, we obtain exact solutions of homogenous isotropic and inhomogeneous anisotropic spheroid models. It turns out that homogenous solutions reduce to Schwarzschild type interior solutions for a spherical case. We conclude that homogenous models involve homogenous distribution of scalar field whereas inhomogeneous correspond to inhomogeneous scalar field.

引用

页码：39 / 48

页数：10