Nonrelativistic approximation of scalar-tensor theory with torsion and intermediate-range force

1991 ◽  
Vol 30 (12) ◽  
pp. 1679-1689
Author(s):  
Ji-Zhong Xu
Keyword(s):  
Scalar Tensor Theory ◽  
Nonrelativistic Approximation ◽  
Intermediate Range ◽  
Tensor Theory ◽  
Range Force

scholarly journals Light deflection in the second post-Newtonian approximation of scalar-tensor theory of gravity

2007 ◽  
Vol 3 (S248) ◽  
pp. 401-402 ◽  
Author(s):  
P. Dong ◽  
W. T. Ni
Keyword(s):  
Equation Of Motion ◽  
Scalar Tensor Theory ◽  
Light Deflection ◽  
Intermediate Range ◽  
Deflection Of Light ◽  
Tensor Theory ◽  
Newtonian Approximation ◽  
Theory Of Gravity ◽  
Precision Astrometry

AbstractIn this paper, we use the metric coefficients and the equation of motion in the 2nd post-Newtonian approximation in scalar-tensor theory including intermediate range gravity to derive the deflection of light and compare it with previous works. These results will be useful for precision astrometry missions like Gaia, SIM, and LATOR (Laser Astrometric Test Of Relativity) which aim at astrometry with micro-arcsecond and nano-arcsecond accuracies and a need for the 2nd post-Newtonian framework and ephemeris to determine the stellar and spacecraft positions.

scholarly journals Field Independent Cosmic Evolution

2013 ◽  
Vol 2013 ◽  
pp. 1-12 ◽  
Author(s):  
Nayem Sk ◽  
Abhik Kumar Sanyal
Keyword(s):  
Higher Order ◽  
Noether Symmetry ◽  
Scalar Tensor Theory ◽  
Anisotropic Model ◽  
Tachyonic Field ◽  
Tensor Theory ◽  
Cosmic Evolution ◽  
Field Independent ◽  
Conserved Current ◽  
Theory Of Gravity

It has been shown earlier that Noether symmetry does not admit a form of corresponding to an action in which is coupled to scalar-tensor theory of gravity or even for pure theory of gravity taking anisotropic model into account. Here, we prove that theory of gravity does not admit Noether symmetry even if it is coupled to tachyonic field and considering a gauge in addition. To handle such a theory, a general conserved current has been constructed under a condition which decouples higher-order curvature part from the field part. This condition, in principle, solves for the scale-factor independently. Thus, cosmological evolution remains independent of the form of the chosen field, whether it is a scalar or a tachyon.

Some results in the general scalar tensor theory

1984 ◽  
Vol 102 (2) ◽  
pp. 223-228
Author(s):  
Tarkeshwar Singh ◽  
T. Singh
Keyword(s):  
Scalar Tensor Theory ◽  
Tensor Theory ◽  
General Scalar

GALACTIC AND ASTROPHYSICAL SIZES FROM SCALAR-TENSOR THEORY OF GRAVITY

2004 ◽  
Vol 13 (02) ◽  
pp. 359-371 ◽  
Author(s):  
GIUSEPPE BASINI ◽  
MARCO RICCI ◽  
FULVIO BONGIORNO ◽  
SALVATORE CAPOZZIELLO
Keyword(s):  
Scalar Field ◽  
Spiral Galaxies ◽  
Weak Field ◽  
Newtonian Potential ◽  
Scalar Tensor Theory ◽  
Field Limit ◽  
Weak Field Limit ◽  
Tensor Theory ◽  
Flat Rotation Curves ◽  
Theory Of Gravity

We investigate the weak-field limit of scalar-tensor theory of gravity and show that results are directly depending on the coupling and self-interaction potential of the scalar field. In particular, corrections are derived for the Newtonian potential. We discuss astrophysical applications of the results, in particular the flat rotation curves of spiral galaxies.

Testing the Intermediate-Range Force at Separations Around 50 Meters

1991 ◽  
Vol 8 (7) ◽  
pp. 329-332 ◽  
Author(s):  
Yang Xinshe ◽  
Liu Wuming ◽  
Zhao Hailong ◽  
Li Jingtian
Keyword(s):  
Intermediate Range ◽  
Range Force
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