Creating perturbations from a decaying field during inflation

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A. Mazumdar, L. Wang

Typically, the fluctuations generated from a decaying field during inflation do not contribute to the large scale structures. In this paper, we provide an example where it is possible for a field which slowly rolls and then decays during inflation to create all the matter perturbations with a slightly red-tilted spectral index, with no isocurvature perturbations, and with a possibility of a departure from Gaussian fluctuations.
OriginalsprogEngelsk
TidsskriftPhysical Review D (Particles, Fields, Gravitation and Cosmology)
Vol/bind87
Udgave nummer8
Sider (fra-til)083501
Antal sider4
ISSN1550-7998
DOI
StatusUdgivet - 1 apr. 2013

ID: 45588707