Constraining f(T) theories with the varying gravitational constant

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,...

Full description

Saved in:
Bibliographic Details
Published in:The European physical journal. C, Particles and fields Particles and fields, 2012-08, Vol.72 (8), p.1-7, Article 2117
Main Authors: Wei, Hao, Qi, Hao-Yu, Ma, Xiao-Peng
Format: Article
Language:English
Subjects:
Astronomy
Astrophysics and Cosmology
Elementary Particles
Exact sciences and technology
Gravitation theory
Gravitational constant
Hadrons
Heavy Ions
Measurement Science and Instrumentation
Nuclear Energy
Nuclear Physics
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Regular Article - Theoretical Physics
String Theory
The physics of elementary particles and fields
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:1434-6044
1434-6052
DOI:10.1140/epjc/s10052-012-2117-8