Regular Article - Theoretical Physics
f(T) models with phantom divide line crossing
Center for Nonlinear Science and Department of Physics, Ningbo University, Ningbo, Zhejiang, 315211, China
* e-mail: Wpx027@gmail.com
Revised: 4 January 2011
Published online: 8 February 2011
In this paper, we propose two new models in f(T) gravity to realize the crossing of the phantom divide line for the effective equation of state, and we then study the observational constraints on the model parameters. The best fit results suggest that the observations favor a crossing of the phantom divide line.
© Springer-Verlag / Società Italiana di Fisica, 2011