A Dark Energy Model in Kaluza-Klein Cosmology

被引：4

作者：

Mukhopadhyay, Utpal ^{[1
]}

Chakraborty, Ipsita ^{[2
]}

Ray, Saibal ^{[3
]}

Usmani, A. A. ^{[4
]}

机构：

[1] Satyabharati Vidyapith, Kolkata 700126, W Bengal, India

[2] Adamas Inst Technol, Dept Phys, Kolkata 700126, W Bengal, India

[3] Govt Coll Engn & Ceram Technol, Dept Phys, Kolkata 700010, W Bengal, India

[4] Aligarh Muslim Univ, Dept Phys, Aligarh 202002, Uttar Pradesh, India

来源：

INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS | 2016年 / 55卷 / 01期

关键词：

Einstein's general relativity; Kaluza-Klein cosmology; Lambda dark energy; ACCELERATING UNIVERSE; VARIABLE-LAMBDA; CONSTANT; SUPERNOVA;

D O I：

10.1007/s10773-015-2672-5

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study a dynamic I > model with varying gravitational constant G under the Kaluza-Klein cosmology. Physical features and the limitations of the present model have been explored and discussed. Solutions are found mostly in accordance with the observed features of the accelerating universe. Interestingly, signature flipping of the deceleration parameter is noticed and the present age of the Universe is also attainable under certain stringent conditions. We find that the time variation of gravitational constant is not permitted without vintage I >.

引用

页码：388 / 395

页数：8

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