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- W3136337149 abstract "In this paper, we study a triad of inhomogeneous scalar fields, known as ”solid”, as a source of homogeneous but anisotropic dark energy. By using a dynamical system approach, we find that anisotropic accelerated solutions can be realized as attractor points for suitable choices of the parameters of the model. We complement the dynamical analysis with a numerical solution whose initial conditions are set in the deep radiation epoch. The model can give an account of a non-negligible spatial shear within the observational bounds nowadays, even when the later is set to zero at early times. However, we find that there is a particular region in the parameter space of the model in which the Universe isotropizes. The anisotropic attractors, the particular isotropic region, and a nearly constant equation of state of dark energy very close to −1 are key features of this scenario. Following a similar approach, we also analyzed the full isotropic version of the model. We find that the solid can be characterized by a constant equation of state and thus being able to simulate the behavior of a cosmological constant." @default.
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- W3136337149 date "2021-05-01" @default.
- W3136337149 modified "2023-09-30" @default.
- W3136337149 title "Anisotropic solid dark energy" @default.
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- W3136337149 doi "https://doi.org/10.1016/j.dark.2021.100806" @default.
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