Notes on f(T) theories
- Department of Astronomy, Beijing Normal University, Beijing 100875 (China)
- Department of Physics, Yantai University, Yantai 264005 (China)
- College of Mathematics and Physics, Chongqing University of Posts and Telecommunications, Chongqing 400065 (China)
The cosmological models based on teleparallel gravity with nonzero torsion are considered. To investigate the evolution of this theory, we consider the phase-space analysis of the f(T) theory. It shows when the tension scalar can be written as an inverse function of x where x = ρ{sub e}/(3m{sub pl}{sup 2}H{sup 2}) and T = g(x), the system is an autonomous one. Furthermore, the ω{sub e}−ω'{sub e} phase analysis is given out. We perform the dynamical analysis for the models f(T) = βTln (T/T{sub 0}) and f(T) = αm{sub pl}{sup 2}(−T/m{sub pl}{sup 2}){sup n} particularly. We find that the universe will settle into de-Sitter phase for both models. And we have examined the evolution behavior of the power law form in the ω{sub ep}−ω'{sub ep} plane.
- OSTI ID:
- 22277775
- Journal Information:
- Journal of Cosmology and Astroparticle Physics, Vol. 2011, Issue 07; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
- Country of Publication:
- United States
- Language:
- English
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