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.

5 pages, 3 figures, responded to referee comments, accepted by ApJ

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Cited by in corpus (9)

• Dark Matter and Dark Energy Interactions: Theoretical Challenges, Cosmological Implications and Observational Signatures
• Time dependent couplings in the dark sector: from background evolution to nonlinear structure formation
• Coupled Quintessence and the Halo Mass Function
• On the observability of coupled dark energy with cosmic voids
• Limits on the parameters of the equation of state for interacting dark energy
• Cosmic Voids in Evolving Dark Sector Cosmologies: the Low Redshift Universe
• Cosmic Voids in Evolving Dark Sector Cosmologies: the High Redshift Universe
• Interacting dark energy collapse with matter components separation
• Coupled Dark Energy field variation