Bose-Einstein Condensation of Dark Matter Axions
Journal Article
·
· Physical Review Letters
- Department of Physics, University of Florida, Gainesville, Florida 32611 (United States)
We show that cold dark matter axions thermalize and form a Bose-Einstein condensate (BEC). We obtain the axion state in a homogeneous and isotropic universe, and derive the equations governing small axion perturbations. Because they form a BEC, axions differ from ordinary cold dark matter in the nonlinear regime of structure formation and upon entering the horizon. Axion BEC provides a mechanism for the production of net overall rotation in dark matter halos, and for the alignment of cosmic microwave anisotropy multipoles.
- OSTI ID:
- 21364682
- Journal Information:
- Physical Review Letters, Vol. 103, Issue 11; Other Information: DOI: 10.1103/PhysRevLett.103.111301; (c) 2009 The American Physical Society; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANISOTROPY
AXIONS
BOSE-EINSTEIN CONDENSATION
EQUATIONS
MICROWAVE RADIATION
MULTIPOLES
NONLINEAR PROBLEMS
NONLUMINOUS MATTER
PERTURBATION THEORY
ROTATION
UNIVERSE
BOSONS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
GOLDSTONE BOSONS
MATTER
MOTION
POSTULATED PARTICLES
RADIATIONS
GENERAL PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANISOTROPY
AXIONS
BOSE-EINSTEIN CONDENSATION
EQUATIONS
MICROWAVE RADIATION
MULTIPOLES
NONLINEAR PROBLEMS
NONLUMINOUS MATTER
PERTURBATION THEORY
ROTATION
UNIVERSE
BOSONS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
GOLDSTONE BOSONS
MATTER
MOTION
POSTULATED PARTICLES
RADIATIONS