Computing observables in curved multifield models of inflation — a guide (with code) to the transport method

Dias, Mafalda, Frazer, Jonathan and Seery, David (2015) Computing observables in curved multifield models of inflation — a guide (with code) to the transport method. Journal of Cosmology and Astroparticle Physics, 2015 (12). ISSN 1475-7516

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Abstract

We describe how to apply the transport method to compute inflationary observables in a broad range of multiple-field models. The method is efficient and encompasses scenarios with curved field-space metrics, violations of slow-roll conditions and turns of the trajectory in field space. It can be used for an arbitrary mass spectrum, including massive modes and models with quasi-single-field dynamics. In this note we focus on practical issues. It is accompanied by a Mathematica code which can be used to explore suitable models, or as a basis for further development.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Mathematics
Subjects: Q Science > QB Astronomy > QB0980 Cosmogony. Cosmology
Depositing User: David Seery
Date Deposited: 15 Feb 2016 10:00
Last Modified: 17 Apr 2017 19:38
URI: http://sro.sussex.ac.uk/id/eprint/59642

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Project NameSussex Project NumberFunderFunder Ref
Precisions tests of the inflationary scenarioG0918EUROPEAN UNION308082