The field-space metric in spiral inflation and related models

Journal Article · Thu Sep 22 00:00:00 EDT 2016 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2016/09/039· OSTI ID:22572156

Erlich, Joshua ^[1]; Olsen, Jackson ^[2]; Wang, Zhen ^[1]

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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)

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.

• Sponsoring Organization: SCOAP3, CERN, Geneva (Switzerland)
• OSTI ID: 22572156
• Journal Information: Journal of Cosmology and Astroparticle Physics, Vol. 2016, 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); ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COSMOLOGICAL INFLATION
INFLATIONARY UNIVERSE
MASS
MATRICES
METRICS
POTENTIALS