ΛCDM COSMOLOGY THROUGH THE LENS OF EINSTEIN'S STATIC UNIVERSE, THE MOTHER OF Λ

被引:3
作者
Mitra, Abhas [1 ]
Bhattacharyya, S. [1 ]
Bhatt, Nilay [1 ]
机构
[1] Bhabha Atom Res Ctr, Theoret Astrophys Sect, Bombay 400085, Maharashtra, India
来源
INTERNATIONAL JOURNAL OF MODERN PHYSICS D | 2013年 / 22卷 / 03期
关键词
General relativity: TOV equation; relativistic fluid dynamics; DE; cosmology; fractal universe;
D O I
10.1142/S0218271813500120
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We show here that, in the context of Einstein's static universe (ESU), the static cosmological constant Lambda(s) = 0. We do so by extending (and not contradicting) the ESU relationship from Lambda s = 4 pi rho to Lambda(s) = 4 pi rho = 0, where rho is the ESU matter density (G = c = 1). This extension follows from the fact that the elements of the spacetime geometry depend on pressure and energy density (.). Note in the Lambda CDM model,. is associated with "Dark Energy (DE)." And, if. would be considered as a fundamental constant, it should be zero even for a dynamic universe. In such a case, the observed accelerated expansion could be an artifact of inhomogeneity [D. L. Wiltshire, Phys. Rev. D 80 (2009) 123512; E. W. Kolb, Class. Quantum. Grav. 28 (2011) 164009] or large peculiar acceleration of the Milky way [C. Tasgas, Phys. Rev. D 84 (2011) 063503] or extinction of light of distant supernovae [R. E. Schild and M. Dekker, Astron. Nachr. 327 (2006) 729, arXiv:astro-ph/0512236]. The same conclusion has also been obtained in an independent manner [A. Mitra, JCAP 03 (2013) 007, doi: 10.1088/1475-7516/2013/03/007].
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页数:11
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