Transient acceleration in f(T) gravity

作     者：Jing-Zhao Qi Rong-Jia Yang Ming-Jian Zhang Wen-Biao Liu 

作者机构：Department of Physics Institute of Theoretical Physics Beijing Normal University College of Physical Science and Technology Hebei University 

出 版 物：《Research in Astronomy and Astrophysics》 (天文和天体物理学研究（英文版）)

年 卷 期：2016年第16卷第2期

页      面：13-18页

核心收录：

学科分类：07[理学] 070401[理学-天体物理] 0704[理学-天文学] 

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.11235003,11175019,11178007,11147028 and11273010) the Hebei Provincial Natural Science Foundation of China(Grant Nos.A2011201147 and A2014201068) 

主　　题：f(T) gravity cosmology -- reconstruction -- observation 

摘      要：Recently an f （T） gravity based on the modification of teleparallel gravity was proposed to ex-plain the accelerated expansion of the universe. We use observational data from type Ia supernovae, baryon acoustic oscillations, and cosmic microwave background to constrain this f（T） theory and reconstruct the effective equation of state and the deceleration parameter. We obtain the best-fit values of parameters and find an interesting result that the constrained f（T） theory allows for the accelerated Hubble expansion to be a transient effect.