= Phantom energy
{wiki=Phantom_energy}
Phantom energy is a theoretical concept in cosmology associated with the accelerated expansion of the universe. It is a type of dark energy with an equation of state parameter \\( w \\) that is less than -1. This means that the pressure exerted by phantom energy is more negative than its energy density. In standard cosmological models, dark energy typically has an equation of state parameter \\( w \\) around -1, corresponding to the cosmological constant.
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