Axion Bose-Einstein Condensation: a model beyond Cold Dark Matter

Journal Article · Mon Aug 30 00:00:00 EDT 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3489564· OSTI ID:21426578

Yang, Q ^[1]

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1. Department of Physics, University of Florida, Gainesville, Florida 32611 (United States)

Cold dark matter axions form a Bose-Einstein condensate if the axions thermalize. Recently, it was found [1] that they do thermalize when the photon temperature reaches T{approx}100 eV(f/10{sup 12} GeV){sup 1/2} and that they continue to do so thereafter. We discuss the differences between axion BEC and CDM in the linear regime and the non-linear regime of evolution of density perturbations. We find that axion BEC provides a mechanism for the production of net overall rotation in dark matter halos, and for the alignment of cosmic microwave anisotropy multi-poles.

• OSTI ID: 21426578
• Journal Information: AIP Conference Proceedings, Vol. 1274, Issue 1; Conference: AXIONS 2010: International conference on the cosmology, astrophysics and particle physics of the axion and the results of recent searches for this hypothetical particle, Gainesville, FL (United States), 15-18 Jan 2010; Other Information: DOI: 10.1063/1.3489564; (c) 2010 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ANISOTROPY
AXIONS
BOSE-EINSTEIN CONDENSATION
NONLINEAR PROBLEMS
NONLUMINOUS MATTER
PERTURBATION THEORY
PHOTON TEMPERATURE
QUANTUM CHROMODYNAMICS
RELICT RADIATION
WEAK INTERACTIONS
BASIC INTERACTIONS
BOSONS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
FIELD THEORIES
GOLDSTONE BOSONS
INTERACTIONS
MATTER
MICROWAVE RADIATION
POSTULATED PARTICLES
QUANTUM FIELD THEORY
RADIATIONS