Observational constraints on dark matter-dark energy scattering cross section
Abstract
In this letter, we report precise and robust observational constraints on dark matter-dark energy scattering cross section, using the latest data from cosmic microwave background (CMB) Planck temperature and polarization, baryon acoustic oscillations (BAO) measurements and weak gravitational lensing data from Canada-France-Hawaii Telescope Lensing Survey (CFHTLenS). The scattering scenario consists of a pure momentum exchange between the dark components, and we find at 95\% CL from the joint analysis (CMB + BAO + CFHTLenS), for typical dark matter particle mass of the order 1-10 . We notice that the scattering among the dark components may influence the growth of large scale structure in the Universe, leaving the background cosmology unaltered.
Keywords
Cite
@article{arxiv.1709.02384,
title = {Observational constraints on dark matter-dark energy scattering cross section},
author = {Suresh Kumar and Rafael C. Nunes},
journal= {arXiv preprint arXiv:1709.02384},
year = {2017}
}
Comments
6 pages, 4 figures, 1 table, Minor changes/additions, Matches the version published in EPJC