Detecting dark matter-dark energy coupling with the halo mass function
Abstract
We use high-resolution simulations of large-scale structure formation to analyze the effects of interacting dark matter and dark energy on the evolution of the halo mass function. Using a chi-square likelihood analysis, we find significant differences in the mass function between models of coupled dark matter-dark energy and standard concordance cosmology Lambda-CDM out to redshift z=1.5. We also find a preliminary indication that the Dark Energy Survey should be able to distinguish these models from Lambda-CDM within its mass and redshift contraints. While we can distinguish the effects of these models from Lambda-CDM cosmologies with different fundamental parameters, DES will require independent measurements of sigma-8 to confirm these effects.
Cite
@article{arxiv.0804.4172,
title = {Detecting dark matter-dark energy coupling with the halo mass function},
author = {P. M. Sutter and P. M. Ricker},
journal= {arXiv preprint arXiv:0804.4172},
year = {2009}
}
Comments
5 pages, 3 figures, responded to referee comments, accepted by ApJ