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2011

de Sitter Gauge Theory of Gravity: An Alternative Torsion Cosmology

Ao, Xi-Chen, Li, Xin-Zhou

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A new cosmological model based on the de Sitter gauge theory (dSGT) is studied in this paper.

By some transformations, we find, in the dust universe, the cosmological equations of dSGT could form an autonomous system.
We conduct dynamics analysis to this system, and find 9 critical points, among which there exist one positive attractor and one negative attractor.
The positive attractor shows us that our universe will enter a exponential expansion phase in the end, which is similar to the conclusion of $\Lambda$CDM.

de Sitter Gauge Theory of Gravity: An Alternative Torsion Cosmology · Around

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F. W. Hehl, Four lectures on Poincaré gauge field theory in Proc. of the 6th Course of the School of Cosmology and Gravitation on Spin, Torsion, Rotation, and Supergravity , eds. P. G. Bergmann and V. De Sabbata (New York: Plenum) p5 M. Blagojević, Gravitation and Gauge Symmetries , IoP Publishing, Bristol, 2002
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P. J. E. Peebles and B. Ratra, The cosmological constant and dark energy , Rev. Mod. Phys. 75
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X.-Z. Li, Y.-B. Zhao, and C.-B. Sun, Heteroclinic orbit and tracking attractor in cosmological model with a double exponential potential , Class. Quant. Grav. 22
2003
Earlier work this paper cites.

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C.-G. Huang, H.-Q. Zhang, and H.-Y. Guo, Cosmological Solutions with Torsion in a Model of de Sitter Gauge Theory of Gravity JCAP 0810
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2008
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Then

J.-G. Hao and X.-Z. Li, Phantom Cosmic Dynamics: Tracking Attractor and Cosmic Doomsday , Phys. Rev. D70
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2010
Later among the works it cites.
X.-Z. Li, C.-B. Sun, and P. Xi, Torsion cosmolgical dynamics , Phys. Rev. D79
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2010
Later among the works it cites.
H. Chen, F.-H. Ho and J. M. Nester, C.-H. Wang, and H.-J. Yo, Cosmological dynamics with propagating Lorentz connection modes of spin zero , JCAP 0910
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2011
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