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- Title
Constraining f( T) theories with the varying gravitational constant.
- Authors
Wei, Hao; Qi, Hao-Yu; Ma, Xiao-Peng
- Abstract
As is well known, a varying effective gravitational 'constant' is one of the common features of most modified gravity theories. Of course, as a modified gravity theory, f( T) theory is not an exception. Noting that the observational constraint on the varying gravitational 'constant' is very tight, in the present work we try to constrain f( T) theories with the varying gravitational 'constant'. We find that the allowed model parameter n or β has been significantly shrunk to a very narrow range around zero. In fact, the results improve the previous constraints by an order of magnitude.
- Subjects
CONSTRAINTS (Physics); GRAVITATIONAL fields; PHYSICAL constants; NUCLEAR physics; PARTICLES (Nuclear physics); GRAVITY
- Publication
European Physical Journal C -- Particles & Fields, 2012, Vol 72, Issue 8, p1
- ISSN
1434-6044
- Publication type
Article
- DOI
10.1140/epjc/s10052-012-2117-8