# Perturbations In A Non-Uniform Dark Energy Fluid: Equations Reveal Effects of Modified Gravity and Dark Matter

@article{Halle2007PerturbationsIA,
title={Perturbations In A Non-Uniform Dark Energy Fluid: Equations Reveal Effects of Modified Gravity and Dark Matter},
author={Anaelle Halle and HongSheng Zhao and Baojiu Li},
journal={arXiv: Astrophysics},
year={2007}
}
• Published 6 November 2007
• Physics
• arXiv: Astrophysics
We propose a unified single-field description of the galactic Dark Matter and various uniform scalar fields for the inflation and cosmological constant. The two types of effects could originate from a fluid of both spatially and temporally varying Vacuum Energy if the vacuum has an uneven pressure caused by a photon-like vector field (of perhaps an unstable massive boson). We propose a most general Lagrangian with a {\bf N}on-{\bf u}niform Cosmological Constant for this vacuum fluid (dubbed as…
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