Self-Interacting Dark Matter

Abstract

Spergel and Steinhardt have recently proposed the concept of dark matter with strong self-interactions as a means to address numerous discrepancies between observations of dark matter halos on subgalactic scales and the predictions of the standard collisionless dark matter picture. We review the motivations for this scenario and discuss some recent, successful numerical tests. We also discuss the possibility that the dark matter interacts strongly with ordinary baryonic matter, as well as with itself. We present a new analysis of the experimental constraints and re-evaluate the allowed range of cross-section and mass.

12 pages, 3 figures; minor typos corrected. To appear in Proceedings of Dark Matter 2000

References in corpus (5)

• Density profiles and substructure of dark matter halos: converging results at ultra-high numerical resolution
• A Test of the Collisional Dark Matter Hypothesis from Cluster Lensing
• The structure and evolution of weakly self-interacting cold dark matter halos
• Tully-Fisher Relation and its Implications for Halo Density Profile and Self-interacting Dark Matter
• Galactic halos of self-interacting dark matter

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• Absorption of Sub-MeV Fermionic Dark Matter by Electron Targets
• Direct Detection Limits on Heavy Dark Matter
• Precise dark matter relic abundance in decoupled sectors
• Etching Plastic Searches for Dark Matter
• Decay of Boson Stars with Application to Glueballs and Other Real Scalars
• Galactic Center constraints on self-interacting sterile neutrinos from fermionic dark matter ("ino") models
• Constraints on GeV Dark Matter interaction with baryons, from a novel Dewar experiment
• Massive Fermi Gas in the Expanding Universe
• Resonant Scattering between Dark Matter and Baryons: Revised Direct Detection and CMB Limits
• Big-bang nucleosynthesis constraints on dark-matter sectors revisited