2014-01-27

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Taro Kunimitsu, TBA
Richard Easther (Univ. of Auckland), 

``Dynamics and Observables for Multifield Inflation",

Abstract:
The canonical model of the inflationary phase describes a universe dominated by a single, minimally-coupled scalar field with Einstein gravity.  However, many proposed fundamental particle physics scenarios have many scalar degrees of freedom. Consequently, while single field inflationary models are simple, they are not necessarily natural.  I will survey the dynamics of generic models of multifield inflation, looking at their initial conditions and perturbation spectra and discuss the possibility that some N-field models may have "attractor solutions" when N>>1.