Q-Ball candidates for self-interacting dark matter -: art. no. 141301

被引:130
作者
Kusenko, A [1 ]
Steinhardt, PJ
机构
[1] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA
[2] Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA
[3] Princeton Univ, Dept Phys, Princeton, NJ 08540 USA
关键词
D O I
10.1103/PhysRevLett.87.141301
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
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.
引用
收藏
页码:141301/1 / 141301/4
页数:4
相关论文
共 44 条
[1]   A NEW MECHANISM FOR BARYOGENESIS [J].
AFFLECK, I ;
DINE, M .
NUCLEAR PHYSICS B, 1985, 249 (02) :361-380
[2]  
ANISIMOV A, HEPPH0008058
[3]   Dynamics of nontopological solitons:: Q balls -: art. no. 085006 [J].
Axenides, M ;
Komineas, S ;
Perivolaropoulos, L ;
Floratos, M .
PHYSICAL REVIEW D, 2000, 61 (08)
[4]   Q-ball dynamics [J].
Battye, RA ;
Sutcliffe, PM .
NUCLEAR PHYSICS B, 2000, 590 (1-2) :329-363
[5]   Halo formation in warm dark matter models [J].
Bode, P ;
Ostriker, JP ;
Turok, N .
ASTROPHYSICAL JOURNAL, 2001, 556 (01) :93-107
[6]   Q-BALLS [J].
COLEMAN, S .
NUCLEAR PHYSICS B, 1985, 262 (02) :263-283
[7]  
DALCANTON JJ, ASTROPH0004381
[8]   Baryogenesis from flat directions of the supersymmetric standard model [J].
Dine, M ;
Randall, L ;
Thomas, S .
NUCLEAR PHYSICS B, 1996, 458 (1-2) :291-323
[9]   SUPERSYMMETRY BREAKING IN THE EARLY UNIVERSE [J].
DINE, M ;
RANDALL, L ;
THOMAS, S .
PHYSICAL REVIEW LETTERS, 1995, 75 (03) :398-401
[10]   New physics in a nutshell, or Q-ball as a power plant [J].
Dvali, G ;
Kusenko, A ;
Shaposhnikov, M .
PHYSICS LETTERS B, 1998, 417 (1-2) :99-106