Couplings and spectra in modular inflation

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We analyze how the spectrum of perturbations produced in a multicomponent modular inflation model proposed by Kadota and Stewart depends on couplings between the two moduli. Although some simple direct couplings give essentially the same results as the original model, dn/dlnk proportional to n-1, simple indirect couplings produce a power law spectrum, n-1=constant, which can naturally be close to scale invariant.
Publisher
AMER PHYSICAL SOC
Issue Date
2008-01
Language
English
Article Type
Article
Keywords

COSMOLOGICAL IMPLICATIONS; PERTURBATIONS; SUPERSYMMETRY; BREAKING; FIELD

Citation

PHYSICAL REVIEW D, v.77

ISSN
1550-7998
DOI
10.1103/PhysRevD.77.023535
URI
http://hdl.handle.net/10203/89805
Appears in Collection
PH-Journal Papers(저널논문)
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