Geodesic
Construction of exact solutions in two-field cosmological models
Teoretičeskaâ i matematičeskaâ fizika, Tome 155 (2008) no. 1, pp. 47-61

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

We construct a dark energy model with a phantom scalar field, a standard scalar field, and a polynomial potential inspired by string field theory. We find a two-parameter set of exact solutions of the Friedmann equations. We find a potential satisfying the conditions obtained from the string theory and such that at large times, some of the exact solutions correspond to the state parameter $w_{\mathrm{DE}}>-1$ while the others correspond to $w_{\mathrm{DE}}-1$. We demonstrate that the superpotential method is very effective for seeking new exact solutions.
Keywords: string field theory, cosmology, phantom, dark energy, superpotential method.
Mots-clés : exact solution 
@article{TMF_2008_155_1_a4,
     author = {S. Yu. Vernov},
     title = {Construction of exact solutions in two-field cosmological models},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {47--61},
     publisher = {mathdoc},
     volume = {155},
     number = {1},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2008_155_1_a4/}
}
TY  - JOUR
AU  - S. Yu. Vernov
TI  - Construction of exact solutions in two-field cosmological models
JO  - Teoretičeskaâ i matematičeskaâ fizika
PY  - 2008
SP  - 47
EP  - 61
VL  - 155
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TMF_2008_155_1_a4/
LA  - ru
ID  - TMF_2008_155_1_a4
ER  - 
%0 Journal Article
%A S. Yu. Vernov
%T Construction of exact solutions in two-field cosmological models
%J Teoretičeskaâ i matematičeskaâ fizika
%D 2008
%P 47-61
%V 155
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TMF_2008_155_1_a4/
%G ru
%F TMF_2008_155_1_a4
S. Yu. Vernov. Construction of exact solutions in two-field cosmological models. Teoretičeskaâ i matematičeskaâ fizika, Tome 155 (2008) no. 1, pp. 47-61. http://geodesic.mathdoc.fr/item/TMF_2008_155_1_a4/