Geodesic
Universe evolution in the Einstein frame of Jordan–Brans–Dicke theory
Proceedings of the Yerevan State University. Physical and mathematical sciences, no. 2 (2010), pp. 49-54.

Voir la notice de l'article provenant de la source Math-Net.Ru

Cosmological models of the Universe in the framework of Jordan-Brans-Dicke theory in the Einstein frame in the case of scalar field domination as well as in the presence of cosmological constant $\Lambda$ with matter, which is described by barometric equation of state $P=\alpha\varepsilon$ ($P$ is the pressure, $\varepsilon$ is the energy density of matter), are considered. The analysis of obtained results in the light of observational data are done. It is shown that the contribution of the scalar field and $\Lambda$-member ($\Lambda>0$ ) in the case of $q=-1/2$ ($q$ is the "decelerating" parameter) compensate each other. In addition, the situation leads to Einstein’s theory. 
@article{UZERU_2010_2_a7,
     author = {E. V. Chubaryan and R. M. Avakyan and G. H. Harutyunyan and A. S. Piloyan},
     title = {Universe evolution in the {Einstein} frame of {Jordan{\textendash}Brans{\textendash}Dicke} theory},
     journal = {Proceedings of the Yerevan State University. Physical and mathematical sciences},
     pages = {49--54},
     publisher = {mathdoc},
     number = {2},
     year = {2010},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/UZERU_2010_2_a7/}
}
TY  - JOUR
AU  - E. V. Chubaryan
AU  - R. M. Avakyan
AU  - G. H. Harutyunyan
AU  - A. S. Piloyan
TI  - Universe evolution in the Einstein frame of Jordan–Brans–Dicke theory
JO  - Proceedings of the Yerevan State University. Physical and mathematical sciences
PY  - 2010
SP  - 49
EP  - 54
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/UZERU_2010_2_a7/
LA  - en
ID  - UZERU_2010_2_a7
ER  - 
%0 Journal Article
%A E. V. Chubaryan
%A R. M. Avakyan
%A G. H. Harutyunyan
%A A. S. Piloyan
%T Universe evolution in the Einstein frame of Jordan–Brans–Dicke theory
%J Proceedings of the Yerevan State University. Physical and mathematical sciences
%D 2010
%P 49-54
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/UZERU_2010_2_a7/
%G en
%F UZERU_2010_2_a7
E. V. Chubaryan; R. M. Avakyan; G. H. Harutyunyan; A. S. Piloyan. Universe evolution in the Einstein frame of Jordan–Brans–Dicke theory. Proceedings of the Yerevan State University. Physical and mathematical sciences, no. 2 (2010), pp. 49-54. http://geodesic.mathdoc.fr/item/UZERU_2010_2_a7/

[1] R.M. Avagyan, G.H. Harutunyan, “The Cosmological Scalar in the Jordan-Brans-Dicke Theory. II”, Asatrophysics, 48 (2005), 633–640

[2] N. Brown, “High redshift Supernovae: Cosmological Implications”, Nuovo Cim. B, 120 (2005), 667–676

[3] E.T. Copeland, M. Sami, S. Tsujikawa, “Dynamics of Dark Energy”, Int. J. Mod. Phys. D, 15 (2006), 1753–1936 | DOI | MR

[4] R.M. Avagyan, G.H. Harutunyan, V.V. Papoyan, “The Cosmological Scalar in the Jordan-Brans-Dicke Theory. I”, Astrofizika, 48:11 (2005), 455–462

[5] G. Bennet et.al., “First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Preliminary Maps and Basic Results”, Astrophys.J.Suppl, 148:1 (2003), 1–28, arXiv: astro-ph/0302207 | DOI

[6] V.J. Moncy, “Cosmographic Evaluation of the Deceleration Parameter Using Type Ia Supernova Data”, Astrophysical Journal, 614 (2004), 1–5 | DOI

[7] V. Sahni, A.A. Starobinsky, “The Case For a Positive Cosmological $\Lambda$-Term”, Int. J. Mod. Phys. D, 9 (2000), 373