Abstract:Within the framework of DBI non-canonical scalar field model of dark energy, we study the growth of dark matter perturbations in both the linear and non-linear regimes. In our DBI model, we consider the anti-de Sitter warp factor f (φ) = f 0 φ −4 with constant f 0 > 0 and assume the DBI dark energy to be clustered and its sound speed c s to be constant. In the linear regime, we use the Pseudo-Newtonian formalism to obtain the growth factor of dark matter perturbations and conclude that for smaller, the growth … Show more
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