Lab Home | Phone | Search
Center for Nonlinear Studies  Center for Nonlinear Studies
 Colloquia Archive 
 Postdoc Seminars Archive 
 Quantum Lunch 
 CMS Colloquia 
 Q-Mat Seminars 
 Q-Mat Seminars Archive 
 Kac Lectures 
 Dist. Quant. Lecture 
 Ulam Scholar 
 Summer Research 
 Past Visitors 
 History of CNLS 
 Maps, Directions 
 CNLS Office 
Monday, June 01, 2009
3:00 PM - 4:00 PM
CNLS Conference Room (TA-3, Bldg 1690)


Bose-Einstein Condensation of Dark Matter Axions

Pierre Sikivie
University of Florida

The axion provides a solution to the strong CP problem and is a cold dark matter candidate. I'll briefly review the limits on the axion from particle physics, stellar evolution and cosmology. The various constraints suggest that the axion mass is in the micro-eV to milli-eV range. In this range, axions contribute significantly to the energy density of the universe in the form of cold dark matter. It has recently been found that cold dark matter axions thermalize and form a Bose-Einstein condensate. As a result, it may be possible to distinguish axion dark matter from other dark matter candidates, such as weakly interacting massive particles, on observational grounds.Bose-Einstein condensation of dark matter axions may provide a mechanism for the production of net overall rotation in dark matter halos, and for the alignment of cosmic microwave anisotropy multipoles.

Host: Eddy Timmermans, CNLS