Q -Ball Candidates for Self-Interacting Dark Matter

Journal Article · Mon Oct 01 00:00:00 EDT 2001 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.87.141301· OSTI ID:40277669

Kusenko, Alexander; Steinhardt, Paul J

We show that nontopological 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.

• Research Organization: Princeton Univ., NJ (United States)
• Sponsoring Organization: (US)
• DOE Contract Number: FG02-91ER40671; FG03-91ER40662
• OSTI ID: 40277669
• Journal Information: Physical Review Letters, Vol. 87, Issue 14; Other Information: DOI: 10.1103/PhysRevLett.87.141301; Othernumber: PRLTAO000087000014141301000001; 011140PRL; PBD: 1 Oct 2001; ISSN 0031-9007
• Publisher: The American Physical Society
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CROSS SECTIONS
NONLUMINOUS MATTER
SOLITONS