Constraints on SIDM with flavor mixing

Details Constraints on SIDM with flavor mixing Constraints on SIDM with flavor mixing

2001-05-09

arxiv.org/abs/astro-ph/0105156v1

Astronomy and Astrophysics

Astrophysics

8 pages, 2 figures. To be published in proceedings of the Dark Universe symposium, 2001

Scientific paper

The self-interacting dark matter (SIDM) model with flavor mixing (astro-ph/0010616) was proposed to resolve problems of the CDM model on small scales by keeping attractive features of both SIDM and annihilating dark matter, and simultaneously avoid their drawbacks. A dark particle produced in a flavor eigenstate will separate into two mass eigenstates because they propagate with different velocities and, in a gravitational filed, along different geodesics, see Fig. 1. Thus, in the flavor-mixed SIDM, dark halos are made of heavy eigenstates, whereas light eigenstates may leave the halo. Collisions (elastic scattering) of mass states results in eigenstate conversion, see Fig. 2, which leads to the gradual decrease of the halo mass in high-density cusps. On the other hand, in the early Universe, one may expect a problem of over-production of light (hot) particles over heavy (cold) when the temperature of dark matter falls below the mass of the heavy component. We show how this problem is avoided.

Affiliated with

Also associated with

No associations

Rating

Constraints on SIDM with flavor mixing 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 Constraints on SIDM with flavor mixing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Constraints on SIDM with flavor mixing will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-244536