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Inflationary axion cosmology
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 ${10}^{\mathrm{\ensuremath{-}}6}$ 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, ${\mathrm{\ensuremath{\theta}}}_{1}$\ensuremath{\lesssim}[${\mathit{m}}_{\mathit{a}}$/(${10}^{\mathrm{\ensuremath{-}}6}$ eV${]}^{0.59}$.] We show consideration of fluctuations induced during inflation severely constrains the latter alternative.
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Citations
Cited by
SEVEN-YEAR WILKINSON MICROWAVE ANISOTROPY PROBE(WMAP) OBSERVATIONS: COSMOLOGICAL INTERPRETATION
Komatsu, E., Smith, K. M., Dunkley, J., Bennett, C. L., Gold, B., Hinshaw, G., Jarosik, N., Larson, D., Nolta, M. R., Page, L., et al. (2011) · The Astrophysical Journal Supplement Series · doi:10.1088/0067-0049/192/2/18 · Cited by 8,802
FIVE-YEAR WILKINSON MICROWAVE ANISOTROPY PROBE OBSERVATIONS: COSMOLOGICAL INTERPRETATION
Komatsu, E., Dunkley, J., Nolta, M. R., Bennett, C. L., Gold, B., Hinshaw, G., Jarosik, N., Larson, D., Limon, M., Page, L., et al. (2009) · The Astrophysical Journal Supplement Series · doi:10.1088/0067-0049/180/2/330 · Cited by 5,786
Planck 2013 results. XXII. Constraints on inflation
Planck Collaboration, Ade, P. A. R., Aghanim, N., Armitage-Caplan, C., Arnaud, M., Ashdown, M., Atrio-Barandela, F., Aumont, J., Baccigalupi, C., Banday, A. J., et al. (2014) · Astronomy & Astrophysics · doi:10.1051/0004-6361/201321569 · Cited by 1,082
Cosmology and Fundamental Physics with the Euclid Satellite
The Euclid Theory Working Group, Amendola, L., Appleby, S., Bacon, D., Baker, T., Baldi, M., Bartolo, N., Blanchard, A., Bonvin, C., Borgani, S., et al. (2013) · Living Reviews in Relativity · doi:10.12942/lrr-2013-6 · Cited by 899
Axions in inflationary cosmology
Linde, A. (1991) · Physics Letters B · doi:10.1016/0370-2693(91)90130-i · Cited by 773
Metadata
- Authors
- Turner, M. S., & Wilczek, F.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 1991-01-07
- Volume
- 66
- Issue
- 1
- Pages
- 5-8
- ISSN
- 0031-9007 (ISSN-L)
- OpenAlex
- W2172058970
- Cited by
- 183
- References
- 0
- FWCI
- 4.59
- Type
- journal article
- Language
- en
- Open access
- closed
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- Turner, M. S., & Wilczek, F. (1991). Inflationary axion cosmology. Physical Review Letters. https://doi.org/10.1103/physrevlett.66.5
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