Journal
EUROPEAN PHYSICAL JOURNAL C
Volume 71, Issue 11, Pages -Publisher
SPRINGER
DOI: 10.1140/epjc/s10052-011-1797-9
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Funding
- Hebei Provincial Natural Science Foundation of China [A2011201147]
- Hebei University [2009-155]
- Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences [0529410T41-200901]
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Recently f(T) theories based on modifications of teleparallel gravity, where torsion is the geometric object describing gravity instead of curvature, have been proposed to explain the present cosmic accelerating expansion. The field equations are always second order, remarkably simpler than f(R) theories. In analogy to the f(R) theory, we consider here three types of f(T) gravity, and find that all of them can give rise to cosmic acceleration with interesting features, respectively.
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