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Title: The field-space metric in spiral inflation and related models

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.

Authors:
 [1];  [2];  [1]
  1. High Energy Theory Group, Department of Physics, College of William and Mary,Williamsburg, VA 23187 (United States)
  2. School of Physics and Astronomy, University of Minnesota,Minneapolis, MN 55455 (United States)
Publication Date:
Sponsoring Org.:
SCOAP3, CERN, Geneva (Switzerland)
OSTI Identifier:
22572156
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2016; Journal Issue: 09; Other Information: PUBLISHER-ID: JCAP09(2016)039; OAI: oai:repo.scoap3.org:17290; cc-by Article funded by SCOAP3. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 License. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; COSMOLOGICAL INFLATION; INFLATIONARY UNIVERSE; MASS; MATRICES; METRICS; POTENTIALS

Citation Formats

Erlich, Joshua, Olsen, Jackson, and Wang, Zhen. The field-space metric in spiral inflation and related models. United States: N. p., 2016. Web. doi:10.1088/1475-7516/2016/09/039.
Erlich, Joshua, Olsen, Jackson, & Wang, Zhen. The field-space metric in spiral inflation and related models. United States. doi:10.1088/1475-7516/2016/09/039.
Erlich, Joshua, Olsen, Jackson, and Wang, Zhen. Thu . "The field-space metric in spiral inflation and related models". United States. doi:10.1088/1475-7516/2016/09/039.
@article{osti_22572156,
title = {The field-space metric in spiral inflation and related models},
author = {Erlich, Joshua and Olsen, Jackson and Wang, Zhen},
abstractNote = {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},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 09,
volume = 2016,
place = {United States},
year = {Thu Sep 22 00:00:00 EDT 2016},
month = {Thu Sep 22 00:00:00 EDT 2016}
}