TY - JOUR
T1 - F(T) theories and varying fine structure constant
AU - Wei, Hao
AU - Ma, Xiao Peng
AU - Qi, Hao Yu
PY - 2011/9/1
Y1 - 2011/9/1
N2 - In analogy to f(R) theory, recently a new modified gravity theory, namely the so-called f(T) theory, has been proposed to drive the current accelerated expansion without invoking dark energy. In the present work, by extending Bisabr's idea, we try to constrain f(T) theories with the varying fine structure "constant", α=e2/hc. We find that the constraints on f(T) theories from the observational Δα/α data are very severe. In fact, they make f(T) theories almost indistinguishable from ΛCDM model.
AB - In analogy to f(R) theory, recently a new modified gravity theory, namely the so-called f(T) theory, has been proposed to drive the current accelerated expansion without invoking dark energy. In the present work, by extending Bisabr's idea, we try to constrain f(T) theories with the varying fine structure "constant", α=e2/hc. We find that the constraints on f(T) theories from the observational Δα/α data are very severe. In fact, they make f(T) theories almost indistinguishable from ΛCDM model.
KW - F(T) theory
KW - Modified gravity
KW - Varying fine structure constant
UR - http://www.scopus.com/inward/record.url?scp=80051678697&partnerID=8YFLogxK
U2 - 10.1016/j.physletb.2011.07.042
DO - 10.1016/j.physletb.2011.07.042
M3 - Article
AN - SCOPUS:80051678697
SN - 0370-2693
VL - 703
SP - 74
EP - 80
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
IS - 1
ER -