Cosmological Inhomogeneities with Bose-Einstein Condensate Dark Matter
arXiv:1112.4169 · doi:10.1103/PhysRevD.85.023527
Abstract
We consider the growth of cosmological perturbations to the energy density of dark matter during matter domination when dark matter is a scalar field that has undergone Bose-Einstein condensation. We study these inhomogeneities within the framework of both Newtonian gravity, where the calculation and results are more transparent, and General Relativity. The direction we take is to derive analytical expressions, which can be obtained in the small pressure limit. Throughout we compare our results to those of the standard cosmology, where dark matter is assumed pressureless, using our analytical expressions to showcase precise differences. We find, compared to the standard cosmology, that Bose-Einstein condensate dark matter leads to a scale factor, gravitational potential and density contrast that increase at faster rates.
17 pages, 2 figures; typos corrected, references added
References in corpus (6)
- Bose-Einstein Condensation of Dark Matter Axions
- Bose-Einstein Condensate general relativistic stars
- Bose-Einstein condensation of dark matter solves the core/cusp problem
- Cosmic structures via Bose Einstein condensation and its collapse
- Power spectrum for the Bose-Einstein condensate dark matter
- Finite temperature effects in Bose-Einstein Condensed dark matter halos
Cited by in corpus (21)
- WISPy Cold Dark Matter
- A search for ultra-light axions using precision cosmological data
- A Review on the Scalar Field/ Bose-Einstein Condensate Dark Matter Model
- Axion as a cold dark matter candidate: low-mass case
- Dark matter and dark energy from Bose-Einstein condensate
- Bose-Einstein-condensed scalar field dark matter and the gravitational wave background from inflation: new cosmological constraints and its detectability by LIGO
- Cosmological perturbations in coherent oscillating scalar field models
- Cosmological evolution of finite temperature Bose-Einstein Condensate dark matter
- Infinite Statistics Condensate as a Model of Dark Matter
- Scalar-field theory of dark matter
- Gravitational, lensing, and stability properties of Bose-Einstein condensate dark matter halos
- The Pre-merger Impact Velocity of the Binary Cluster A1750 from X-ray, Lensing and Hydrodynamical Simulations
- Cosmological perturbations during the Bose-Einstein condensation of dark matter
- Tangential Velocity of the Dark Matter in the Bullet Cluster from Precise Lensed Image Redshifts
- Non-linear clustering during the BEC dark matter phase transition
- Dark Matter as a Non-Relativistic Bose-Einstein Condensate with Massive Gravitons
- Cosmological limits on axions and axion-like particles
- Asymmetric dark matter with a possible Bose-Einstein condensate
- Condensation of Galactic Cold Dark Matter
- Bose-Einstein condensation as an alternative to inflation
- Supplying Dark Energy from Scalar Field Dark Matter