Growth Rate of Large Scale Structure as a Powerful Probe of Dark Energy
Journal
Phys.Rev. D69 (2004) 027301
Journal Volume
69
Journal Issue
2
Date Issued
2003-04-15
Author(s)
Abstract
The redshift evolution of the growth rate of the gravitational potential,
d(D/a)/dz, is an excellent discriminator of dark energy parameters and, in
principle, more powerful than standard classical tests of cosmology. This
evolution is directly observable through the integrated Sachs-Wolfe effect in
cosmic microwave background (CMB) anisotropies. We consider the prospects of
measuring the growth rate via a novel method employed through measurements of
CMB polarization towards galaxy clusters. The potentially achievable errors on
dark energy parameters are comparable and fully complementary to those expected
from other upcoming tests of dark energy, making this test a highly promising
tool of precision cosmology.
Subjects
Astrophysics; Astrophysics
Description
4 pages, 2 figures, submitted to Phys. Rev. Lett
Type
journal article