Anisotropic massive strings in the scalar-tensor theory of gravitation

作     者：Anil Kumar Yadav 

作者机构：Department of PhysicsAnand Engineering College 

出 版 物：《Research in Astronomy and Astrophysics》 (天文和天体物理学研究（英文版）)

年 卷 期：2013年第13卷第7期

页      面：772-782页

核心收录：

学科分类：08[工学] 080101[工学-一般力学与力学基础] 080102[工学-固体力学] 0801[工学-力学（可授工学、理学学位）] 

基　　金：We are thankful to the referee for his useful comments  which have enabled us to substantially improve the manuscript 

主　　题：early universe    massive strings    scalar tensor theory    classicalpotential 

摘      要：We present the model of an anisotropic universe with string fluid as the source of matter within the framework of the scalar-tensor theory of gravitation. An exact solution of field equations is obtained by applying Berman＇s law of variation to Hubble＇s parameter which yields a constant value of the deceleration parameter. The nature of classical potential is examined for the model under consideration. It has also been found that the massive strings dominate in the early universe and finally disap-pear from the universe. This is in agreement with current astronomical observations. The physical and dynamical properties of the model are also discussed.