Prog. Theor. Phys. Vol. 97 No. 5 (1997) pp. 809-811

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Letters

Are Isocurvature Fluctuations of the M-Theory Axion Observable?

Masahiro Kawasaki and Tsutomu Yanagida^*

Institute for Cosmic Ray Research, University of Tokyo, Tokyo 188
^*Department of Physics, University of Tokyo, Tokyo 133

(Received March 11, 1997)

Abstract:

Banks and Dine have recently shown that the M-theory naturally accommodates the Peccei-Quinn axion. Since the decay constant F_a of the axion is as large as F_a ≃10¹⁵ -10¹⁶ GeV, the halo axion will be difficult to detect in future axion-search experiments. However, we show that isocurvature fluctuations of the M-theory axion produced at the inflationary epoch will most likely be detectable in future satellite experiments on anisotropies of the cosmic microwave background radiation.

URL : http://ptp.ipap.jp/link?PTP/97/809/
DOI : 10.1143/PTP.97.809

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Citing Article(s) :

Progress of Theoretical Physics Vol. 100 No. 5 (1998) pp. 1055-1062 :
Isocurvature Fluctuations of the M-theory Axion in a Hybrid Inflation Model

Toshiyuki Kanazawa, Masahiro Kawasaki, Naoshi Sugiyama and Tsutomu Yanagida
Progress of Theoretical Physics Vol. 102 No. 1 (1999) pp. 71-87 :
Observational Implications of Axionic Isocurvature Fluctuations

Toshiyuki Kanazawa, Masahiro Kawasaki, Naoshi Sugiyama and Tsutomu Yanagida
Progress of Theoretical Physics Vol. 120 No. 5 (2008) pp. 995-1016 :
Cosmological Constraints on Isocurvature and Tensor Perturbations

Masahiro Kawasaki and Toyokazu Sekiguchi