Document Type

Article

Department/Program

Physics

Journal Title

Journal of Cosmology and Astroparticle Physics

Pub Date

2016

Volume

9

Abstract

Multi-field inflation models include a variety of scenarios for how inflation proceeds and ends. Models with the same potential but different kinetic terms are common in the literature. We compare spiral inflation and Dante's inferno-type models, which differ only in their field-space metric. We justify a single-field effective description in these models and relate the single-field description to a mass-matrix formalism. We note the effects of the nontrivial field-space metric on inflationary observables, and consequently on the viability of these models. We also note a duality between spiral inflation and Dante's inferno models with different potentials.

DOI

10.1088/1475-7516/2016/09/039

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