Abstract
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. Weconduct dynamics analysis to this system, and find 9 critical points,among which there exist one positive attractor and one negative attractor. Thepositive attractor shows us that our universe will enter a exponential expansionphase in the end, which is similar to the conclusion of ΛCDM. We alsocarry out some numerical calculations, which confirms the conclusion of dynamicsanalysis. Finally, we fit the model parameter and initial values to the Union 2SNIa dataset, present the confidence contour of parametersand obtain the best-fit values of parameters of dSGT.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
