Energy-momentum tensor in the general scalar-tensor theory

1989 ◽  
Vol 6 (12) ◽  
pp. L263-L265 ◽  
Author(s):  
L O Pimentel
Keyword(s):  
Energy Momentum Tensor ◽  
Momentum Tensor ◽  
Scalar Tensor Theory ◽  
Tensor Theory ◽  
General Scalar

scholarly journals VACUUM POLARIZATION IN THE SPACE–TIME OF A SCALAR–TENSOR COSMIC STRING

2001 ◽  
Vol 16 (24) ◽  
pp. 1565-1571 ◽  
Author(s):  
V. B. BEZERRA ◽  
R. M. TEIXEIRA FILHO ◽  
G. GREBOT ◽  
M. E. X. GUIMARÃES
Keyword(s):  
Cosmic String ◽  
Polarization Effect ◽  
Vacuum Polarization ◽  
Energy Momentum Tensor ◽  
Vacuum Expectation ◽  
Momentum Tensor ◽  
Space Time ◽  
Scalar Tensor Theory ◽  
Expectation Values ◽  
Tensor Theory

We study the vacuum polarization effect in the space–time generated by a magnetic flux cosmic string in the framework of a scalar–tensor theory of gravity. The vacuum expectation values of the energy–momentum tensor of a conformally coupled scalar field are calculated and the dilaton's contribution to the vacuum polarization effect is shown.

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

Static gravitational and Maxwell fields in the general scalar tensor theory

1980 ◽  
Vol 21 (12) ◽  
pp. 2799-2801 ◽  
Author(s):  
A. Banerjee ◽  
S. B. Duttachoudhury
Keyword(s):  
Scalar Tensor Theory ◽  
Tensor Theory ◽  
Maxwell Fields ◽  
General Scalar

Static space‐time in general scalar tensor theory

1984 ◽  
Vol 25 (11) ◽  
pp. 3299-3302 ◽  
Author(s):  
N. Banerjee ◽  
S. B. Dutta Choudhury ◽  
A. Banerjee
Keyword(s):  
Space Time ◽  
Scalar Tensor Theory ◽  
Tensor Theory ◽  
General Scalar ◽  
Static Space

A NOETHER SYMMETRY STUDY IN SCALAR-TENSOR THEORY

1998 ◽  
Vol 13 (24) ◽  
pp. 4163-4171 ◽  
Author(s):  
B. MODAK ◽  
S. KAMILYA ◽  
S. BISWAS
Keyword(s):  
General Relativity ◽  
Functional Form ◽  
Noether Symmetry ◽  
Scalar Tensor Theory ◽  
Field Equations ◽  
Tensor Theory ◽  
Exponential Expansion ◽  
General Scalar ◽  
Spatially Homogeneous ◽  
The Universe

In this work we study a general scalar-tensor theory in which the coupling and potential functions are determined from Noether symmetry arguments. We also obtain exact solutions of the field equations and found that the universe asymptotically follows an exponential expansion having no graceful exit. The study of the functional form of ω(φ) reveals that the theory asymptotically becomes an attractor of general relativity. We restrict ourselves to spatially homogeneous, isotropic flat universe.

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