445 K
10 pp.
 
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TitleInflationary Axion Cosmology
Author(s)Wilczek, Frank; Turner, Michael S.
Publication DateSeptember 1990
Report NumberFERMILAB-Pub-90/198-A
Unique IdentifierACC0086
Other NumbersOSTI ID: 6099352
Research OrgFermi National Accelerator Laboratory; Enrico Fermi Institute, The University of Chicago; Institute for Advanced Study, School of Natural Sciences, Princeton, New Jersey
Contract NoUS Department of Energy (DOE)
Subject640106 -- Astrophysics & Cosmology-- Cosmology ; 645103 -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Interactions & Baryon & Meson Properties; Axions-- Mass; Cosmology-- Axions; Inflationary Universe; Goldstone Bosons; Limiting Values; Phase Transformations; Quantum Chromodynamics; Scalar Fields; Symmetry Breaking
KeywordsBosons; Cosmological Models; Elementary Particles; Field Theories; Goldstone Bosons; Mathematical Models; Postulated Particles; Quantum Field Theory
Related Web PagesFrank Wilczek, Asymptotic Freedom, and Strong Interaction
AbstractIf 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 10-6 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, .1 . (ma/10-6eV)0.59. We show consideration of fluctuations induced during inflation severely constrains the latter alternative.
445 K
10 pp.
 
View Document 
  


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