Axions in astrophysics and cosmology
Axion models often have a spontaneously broken exact discrete symmetry. In that case, they have discretely degenerate vacua and hence domain walls. The properties of the domain walls, the cosmological catastrophe they produce and the ways in which this catastrophe may be avoided are explained. Cosmology and astrophysics provide arguments that imply the axion decay constant should lie in the range 10/sup 8/ GeV less than or equal to f/sub a/ less than or equal to 10/sup 12/ GeV. Reasons are given why axions are an excellent candidate to constitute the dark matter of galactic halos. Using the coupling of the axions to the electromagnetic field, detectors are described to look for axions floating about in the halo of our galaxy and for axions emitted by the sun. (LEW)
- Research Organization:
- Stanford Linear Accelerator Center, CA (USA); Florida Univ., Gainesville (USA). Dept. of Physics
- DOE Contract Number:
- AC03-76SF00515
- OSTI ID:
- 6300273
- Report Number(s):
- SLAC-PUB-3373; CONF-8405155-5; ON: DE85002720
- Resource Relation:
- Conference: Inner space/outer space conference, Batavia, IL, USA, 2 May 1984; Other Information: Portions are illegible in microfiche products. Original copy available until stock is exhausted
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AXIONS
ASTROPHYSICS
COSMOLOGY
COUPLING
DETECTION
ELECTROMAGNETIC FIELDS
SYMMETRY BREAKING
BOSONS
ELEMENTARY PARTICLES
GOLDSTONE BOSONS
POSTULATED PARTICLES
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