skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Bose-Einstein Condensation of Dark Matter Axions

Abstract

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.

Authors:
;  [1]
  1. Department of Physics, University of Florida, Gainesville, Florida 32611 (United States)
Publication Date:
OSTI Identifier:
21364682
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 103; Journal Issue: 11; Other Information: DOI: 10.1103/PhysRevLett.103.111301; (c) 2009 The American Physical Society; Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
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

Citation Formats

Sikivie, P, and Yang, Q. Bose-Einstein Condensation of Dark Matter Axions. United States: N. p., 2009. Web. doi:10.1103/PHYSREVLETT.103.111301.
Sikivie, P, & Yang, Q. Bose-Einstein Condensation of Dark Matter Axions. United States. https://doi.org/10.1103/PHYSREVLETT.103.111301
Sikivie, P, and Yang, Q. 2009. "Bose-Einstein Condensation of Dark Matter Axions". United States. https://doi.org/10.1103/PHYSREVLETT.103.111301.
@article{osti_21364682,
title = {Bose-Einstein Condensation of Dark Matter Axions},
author = {Sikivie, P and Yang, Q},
abstractNote = {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.},
doi = {10.1103/PHYSREVLETT.103.111301},
url = {https://www.osti.gov/biblio/21364682}, journal = {Physical Review Letters},
issn = {0031-9007},
number = 11,
volume = 103,
place = {United States},
year = {Fri Sep 11 00:00:00 EDT 2009},
month = {Fri Sep 11 00:00:00 EDT 2009}
}