Abstract:
We study a dilaton scalar field coupled to ghost dark energy in an anisotropic universe. The evolution of dark energy, which dominates the universe, can be completely described by a single dilaton scalar field. This connection allows reconstructing the kinetic energy and also the dynamics of the dilaton scalar field according to the evolution of the energy density. Using the latest observational data, we obtain bounds on the ghost dark energy models and also on generalized dark matter and dark energy. For this, we investigate how the expansion history H(z) is determined by observational quantities. We calculate the evolution of density perturbations in the linear regime for both ghost and generalized ghost dark energy and compare the results with ΛCDM models. We discuss the justification of the generalized second law of thermodynamics in a Bianchi type-I universe. The obtained model is stable for large time intervals but is unstable at small times.
Keywords:
anisotropic universe, ghost dark energy, generalized ghost dark energy, dilaton scalar field, generalized second law of thermodynamics, perturbation theory.
Citation:
H. Hossienkhani, V. Fayaz, S. A. A. Terohid, N. Azimi, Z. Zarei, M. Ganji, “Anisotropic cosmology with a dilaton field coupled to ghost dark
energy”, TMF, 194:3 (2018), 481–509; Theoret. and Math. Phys., 194:3 (2018), 415–438
\Bibitem{HosFayTer18}
\by H.~Hossienkhani, V.~Fayaz, S.~A.~A.~Terohid, N.~Azimi, Z.~Zarei, M.~Ganji
\paper Anisotropic cosmology with a~dilaton field coupled to ghost dark
energy
\jour TMF
\yr 2018
\vol 194
\issue 3
\pages 481--509
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\crossref{https://doi.org/10.4213/tmf9323}
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\jour Theoret. and Math. Phys.
\yr 2018
\vol 194
\issue 3
\pages 415--438
\crossref{https://doi.org/10.1134/S0040577918030091}
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Linking options:
https://www.mathnet.ru/eng/tmf9323
https://doi.org/10.4213/tmf9323
https://www.mathnet.ru/eng/tmf/v194/i3/p481
This publication is cited in the following 7 articles:
H. Hossienkhani, F. Mahmoodi, V. Fayaz, S. A. A. Terohid, N. Azimi, Z. Zarei, “Phantom cosmologies from the simplest parameterization of the DE model using observational data in a BI type universe”, Chinese Phys. C, 47:11 (2023), 115104
A. Najafi, H. Hossienkhani, “Using Pantheon and Hubble parameter data to constrain the Ricci dark energy in a Bianchi I Universe”, Commun. Theor. Phys., 74:6 (2022), 065401
H. Hossienkhani, N. Azimi, H. Yousefi, “Constraints on the Ricci dark energy cosmologies in Bianchi type i model”, Int. J. Geom. Methods Mod. Phys., 18:06 (2021), 2150095
S. A. A. Terohid, H. Hossienkhani, “Anisotropy effects and observational data on the constraints of evolution dark energy models”, Commun. Theor. Phys., 71:1 (2019), 79–90
S. D. Katore, D. V. Kapse, “Dynamical behavior of coupled magnetized dark energy in lyra's geometry”, Astrophysics, 62:3 (2019), 415–433
H. Hossienkhani, H. Yousefi, N. Azimi, “Testing anisotropy and comparison of various supernova data constraints on dark energy model”, Mod. Phys. Lett. A, 34:34 (2019), 1950276
H. Hossienkhani, H. Yousefi, N. Azimi, “Effect of low anisotropy on cosmological models by using supernova data”, New Astronomy, 68 (2019), 65