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TMF, 2008, Volume 155, Number 1, Pages 47–61 (Mi tmf6192)  

This article is cited in 41 scientific papers (total in 41 papers)

Construction of exact solutions in two-field cosmological models

S. Yu. Vernov

Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University

Abstract: 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, exact solution, superpotential method


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English version:
Theoretical and Mathematical Physics, 2008, 155:1, 544–556

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Citation: S. Yu. Vernov, “Construction of exact solutions in two-field cosmological models”, TMF, 155:1 (2008), 47–61; Theoret. and Math. Phys., 155:1 (2008), 544–556

Citation in format AMSBIB
\by S.~Yu.~Vernov
\paper Construction of exact solutions in two-field cosmological models
\jour TMF
\yr 2008
\vol 155
\issue 1
\pages 47--61
\jour Theoret. and Math. Phys.
\yr 2008
\vol 155
\issue 1
\pages 544--556

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  • Теоретическая и математическая физика Theoretical and Mathematical Physics
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