Couplings and spectra in modular inflation

Wan Il Park; Ewan D. Stewart

doi:10.1103/PhysRevD.77.023535

Couplings and spectra in modular inflation

Wan Il Park^*
, Ewan D. Stewart

^*Corresponding author for this work

Physics Education

Korea Advanced Institute of Science and Technology

Research output: Contribution to journal › Journal article › peer-review

Abstract

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/dlnkn-1, simple indirect couplings produce a power law spectrum, n-1=constant, which can naturally be close to scale invariant.

Original language	English
Article number	023535
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	77
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevD.77.023535
State	Published - 2008.01.31

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10.1103/PhysRevD.77.023535

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title = "Couplings and spectra in modular inflation",

abstract = "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/dlnkn-1, simple indirect couplings produce a power law spectrum, n-1=constant, which can naturally be close to scale invariant.",

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AB - 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/dlnkn-1, simple indirect couplings produce a power law spectrum, n-1=constant, which can naturally be close to scale invariant.

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Couplings and spectra in modular inflation

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