Solution of conharmonic curvature tensor in General Relativity

14th International Conference on Topics in Astroparticle and Underground Physics

物理学;天文学

Tiwari, Rishi Kumar^1

Dept. of Mathematics, Govt. Model Science College Rewa (M.P.), India^1

关键词: Cosmological constants;    Cosmological modeling;    Curvature tensors;    Einstein's field equations;    Exact solution;    General Relativity;    Geometrical property;    Positive constant;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/718/3/032009/pdf
DOI  :  10.1088/1742-6596/718/3/032009

学科分类：天文学(综合)

来源: IOP

【 摘 要 】

Conharmonically flat space time is studied in the frame work of FRW cosmological model. Einstein's field equations with variable cosmological constant are solved by using the law of variation of cosmological constant that scales as a-m(where a is scale factor and m is a positive constant). A new class of exact solutions of the field equations has been obtained in which cosmological constant decreases with cosmic time. Physical and geometrical properties are also discussed in detail.