Higher dimensional cosmological models: An alternative explanation for late time cosmic acceleration

7th International Conference on Gravitation and Cosmology

Pahwa, I.^1

Department of Physics and Astrophysics, University of Delhi, Delhi 11007, India^1

关键词: Acceleration of the universe;    Cosmological models;    Einstein's equations;    Equation of state;    Extra dimensions;    Higher-dimensional;    Observational data;    Zero pressure;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/484/1/012045/pdf
DOI  :  10.1088/1742-6596/484/1/012045

来源: IOP

【 摘 要 】

Einstein's equations have been solved for a homogeneous, anisotropic 1 + 3 + D dimensional universe. We have studied the late time acceleration of the universe in this model. The content of the universe is assumed to be such that it exerts zero pressure in visible dimensions and in extra dimensions, the equation of state is given. The parameters of the model are fixed by comparing with observational data on supernovae. We have shown that late time acceleration occurs in the universe with q0and ztrbeing approximately 0.46 and 0.76 respectively.