http://arxiv.org/abs/1601.03943
A cosmology of Poincare gauge theory is developed, and its analytic solution is obtained. The calculation results agree with observational data and can be compared with the $\Lambda $CDM model. The cosmological constant puzzle, the coincidence and fine tuning problem are relieved naturally at the same time. The cosmological constant turns out to be the intrinsic torsion and curvature of the vacuum universe and is derived from the theory naturally rather than added artificially. The dark energy originates from geometry, includes the cosmological constant but differs from it. The analytic expression of the state equations of the dark energy and the density parameters of the matter and the geometric dark energy are derived. The full equations of linear cosmological perturbations and the solutions are obtained.
J. Lu and G. Chee
Mon, 18 Jan 16
39/50
Comments: 21 pages, 1 figure
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