Are Isocurvature Fluctuations of the M-Theory Axion Observable? | Zendy

Masahiro Kawasaki | Zendy; T. Yanagida | Zendy

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Are Isocurvature Fluctuations of the M-Theory Axion Observable?

Author(s) -

Masahiro Kawasaki,

T. Yanagida

Publication year - 1997

Publication title -

progress of theoretical physics

Language(s) - English

Resource type - Journals

eISSN - 1347-4081

pISSN - 0033-068X

DOI - 10.1143/ptp.97.809

Subject(s) - axion , physics , particle physics , cosmic microwave background , observable , dark matter , astrophysics , anisotropy , quantum mechanics

Banks and Dine have recently shown that the M theory naturally accommodatesthe Peccei-Quinn axion. Since the decay constant $F_a$ of the axion is large as$F_a \simeq 10^{15}-10^{16}$GeV, the halo axion is hardly detected in comingaxion-search experiments. However, we show that isocurvature fluctuations ofthe M-theory axion produced at the inflationary epoch are most likelydetectable in future satellite experiments on anisotropies of the cosmicmicrowave background radiation.Comment: 6 pages (LaTeX2e file, no figure

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