We examine how coupled dark matter and dark energy modify the development of structure in the universe. Specifically, we study how the various effects of these theories, such as a fifth force in the dark sector and a modified particle Hubble drag, produce variations in the redshifts of caustic formation and the present-day density profiles of Zel'dovich pancakes. We compare our results in direct simulation to a perturbation theory approach for the dark energy scalar field. We also examine whether models that have been tuned to match the constraints of current observations can produce new observable effects in the nonlinear structure of the universe.

Finally, we will present results from a fully realistic three-dimensional simulation, in which we describe changes to the evolution and structure of the dark matter halo mass function.

Abstract Type
poster
Primary Author
Paul Sutter
University
University of Illinois at Urbana-Champaign
Abstract Title
The evolution of cosmic structure with coupled dark matter and dark energy
Abstract Author(s)
Paul M Sutter, Paul M Ricker
Username
sutter
Fellowship Year
2007
First Name
Paul
Last Name
Sutter
Program
CSGF
Area of Study
Physics
Poster Group
Group 1
Poster Number
49