Q ball candidates for selfinteracting dark matter

Kusenko, Alexander; Steinhardt, Paul J.

doi:10.1103/PhysRevLett.87.141301

Q ball candidates for selfinteracting dark matter

Alexander Kusenko
(
- UCLA and
- RIKEN BNL
)
,
Paul J. Steinhardt
(
- Princeton U.
)

Jun, 2001

4 pages

Published in:

Phys.Rev.Lett. 87 (2001) 141301

e-Print:

astro-ph/0106008 [astro-ph]

DOI:

10.1103/PhysRevLett.87.141301

Report number:

BNL-HET-01-21,
UCLA-01-TEP-04

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Abstract: (arXiv)

We show that non-topological solitons, known as Q-balls, are promising candidates for self-interacting dark matter. They can satisfy the cross-section requirements for a broad range of masses. Unlike previously considered examples, Q-balls can stick together after collision, reducing the effective self-interaction rate to a negligible value after a few collisions per particle. This feature modifies predictions for halo formation. We also discuss the possibility that Q-balls have large interaction cross-sections with ordinary matter.

Note:

4 pages, 1 figure

dark matter
Q-ball: interaction
scattering: Q-ball p
cross section
cosmological model
Q-ball: production
numerical calculations

References(42)

Figures(0)

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