How the Scalar Field of Unified Dark Matter Models Can Cluster

Details How the Scalar Field of Unified Dark Matter Models Can Cluster How the Scalar Field of Unified Dark Matter Models Can Cluster

2008-07-07

arxiv.org/abs/0807.1020v3

JCAP 0810:023,2008

Astronomy and Astrophysics

Astrophysics

26 pages, 1 figure

Scientific paper

10.1088/1475-7516/2008/10/023

We use scalar-field Lagrangians with a non-canonical kinetic term to obtain unified dark matter models where both the dark matter and the dark energy, the latter mimicking a cosmological constant, are described by the scalar field itself. In this framework, we propose a technique to reconstruct models where the effective speed of sound is small enough that the scalar field can cluster. These models avoid the strong time evolution of the gravitational potential and the large Integrated Sachs-Wolfe effect which have been a serious drawback of previously considered models. Moreover, these unified dark matter scalar field models can be easily generalized to behave as dark matter plus a dark energy component behaving like any type of quintessence fluid.

Affiliated with

Also associated with

No associations

Rating

How the Scalar Field of Unified Dark Matter Models Can Cluster does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with How the Scalar Field of Unified Dark Matter Models Can Cluster, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and How the Scalar Field of Unified Dark Matter Models Can Cluster will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-561330