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Record 3 of 110
Inflationary axion cosmology
External Online Source: doi:10.1103/PhysRevLett.66.5
Author and Affiliation:
Turner, Michael S.(NASAFermilab Astrophysics Center, Batavia)
Wilczek, Frank(Institute for Advanced Study, Princeton, NJ, United States)
Abstract: If Peccei-Quinn (PQ) symmetry is broken after inflation, the initial axion angle is a random variable on cosmological scales; based on this fact, estimates of the relic-axion mass density give too large a value if the axion mass is less than about 10 to the -6th eV. This bound can be evaded if the universe underwent inflation after PQ-symmetry breaking and if the observable universe happens to be a region where the initial axion angle was atypically small. Consideration of fluctuations induced during inflation severely constrains the latter alternative is shown.
Publication Date: Jan 07, 1991
Document ID:
19910035868
(Acquired Nov 28, 1995)
Accession Number: 91A20491
Subject Category: ASTROPHYSICS
Document Type: Journal Article
Publication Information: Physical Review Letters (ISSN 0031-9007); 66; 5-8
Publisher Information: United States
Contract/Grant/Task Num: NAGW-1340
Organization Source: NASA Lewis Research Center; Cleveland, OH, United States
Fermi National Accelerator Lab.; Batavia, IL, United States
Chicago Univ.; Chicago, IL, United States
Institute for Advanced Study; Princeton, NJ, United States
Description: 4p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: BROKEN SYMMETRY; COSMOLOGY; PARTICLE THEORY; QUANTUM CHROMODYNAMICS; SUPERSYMMETRY; DARK MATTER; RELIC RADIATION; STRING THEORY
Imprint And Other Notes: Physical Review Letters (ISSN 0031-9007), vol. 66, Jan. 7, 1991, p. 5-8. Research supported by DOE and NSF.
Miscellaneous Notes: Research supported by DOE and NSF
Availability Source: Other Sources
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