Dark matter axions

Conference · Wed Jan 01 04:00:00 EST 1992

OSTI ID:7109475

Sikivie, P ^[1]

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1. California Univ., Santa Barbara, CA (United States). Inst. for Theoretical Physics Florida Univ., Gainesville, FL (United States). Dept. of Physics

The physics of axions is briefly reviewed theoretically, and various constraints on the axion mass are recounted. Then the two main contributions to the present cosmological axion energy density, that due to the realignment of the vacuum during the QCD phase transition and that from axions radiated by cosmic axion strings, are discussed. Next, two detection schemes for axions that are sensitive to different mass ranges, an electromagnetic cavity permeated by a strong magnetic field and a system of superconducting wires embedded in a material transparent to microwave radiation, are described. Finally, the phase space structure of cold dark matter galactic halos is considered. (RWR)

• Research Organization: Florida Univ., Gainesville, FL (United States). Inst. for Fundamental Theory
• Sponsoring Organization: DOE; NSF; USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States)
• DOE Contract Number: FG05-86ER40272
• OSTI ID: 7109475
• Report Number(s): DOE/ER/40272-171; UFIFT-HEP--92-25; CONF-9202135--1; ON: DE92040501; CNN: PHY89-04035
• Country of Publication: United States
• Language: English

Related Subjects

662440* -- Properties of Other Particles Including Hypothetical Particles-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AXIONS
BOSONS
DETECTION
ELEMENTARY PARTICLES
ENERGY DENSITY
FIELD THEORIES
GALAXIES
GOLDSTONE BOSONS
MASS
MATTER
NONLUMINOUS MATTER
PARTICLE PROPERTIES
POSTULATED PARTICLES
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY