A STUDY OF FOUR AND HIGHER-DIMENSIONAL COSMOLOGICAL MODELS IN LYRAGEOMETRY

Fizika B (Zagreb)

S. CHAKRABORTY¹  N. BEGUM,M. HOSSAIN¹  F. RAHAMAN¹ 

关键词: Lyra geometry;    spherically symmetric models;    four and higher dimensions;   

DOI  :  

学科分类：物理（综合）

来源: Fizika B: a journal of experimental and theoretical physics

【 摘 要 】

Exact cosmological solutions for spherically symmetric models, both in four and higherdimensions are obtained within the framework of Lyra geometry. It is observed that thereis no singularity at finite past in our four-dimensional model. For the five-dimensionalmodel, the diminision of extra dimension with the evolution of the Universe is exhibited.The physical behaviour of the models is examined in vacuum (for the four-dimensional case)and in the presence of perfect fluids (for both four- and five-dimensional models).

【 授权许可】

Unknown