Q-ball candidates for self-interacting dark matter

Preprint

1 June 2001

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.astro-ph/0106008

Abstract

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.

Keywords

EFFECTIVE SELF INTERACTION
COLLISIONS PER PARTICLE
INTERACTING DARK MATTER
TOPOLOGICAL SOLITONS
BALL CANDIDATES
BALLS

All Related Versions

Version 1, 2001-06-01, ArXiv
Published version: Physical Review Letters, 87 (14), 141301.

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