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

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journal contribution
posted on 2023-06-09, 00:17 authored by Mafalda Dias, Jonathan Frazer, David SeeryDavid Seery
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.

Funding

Precisions tests of the inflationary scenario; G0918; EUROPEAN UNION; 308082

History

Publication status

  • Published

File Version

  • Accepted version

Journal

Journal of Cosmology and Astroparticle Physics

ISSN

1475-7516

Publisher

IOP Publishing

Issue

12

Volume

2015

Article number

a030

Department affiliated with

  • Mathematics Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2016-02-15

First Open Access (FOA) Date

2017-01-01

First Compliant Deposit (FCD) Date

2016-02-13

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