publication . Article . 2015

MULTIMODECODE: an efficient numerical solver for multifield inflation

Layne C. Price; Jonathan Frazer; Jiajun Xu; Hiranya V. Peiris; Richard Easther;
Open Access
  • Published: 02 Mar 2015 Journal: Journal of Cosmology and Astroparticle Physics, volume 2,015, pages 5-5 (eissn: 1475-7516, Copyright policy)
  • Publisher: IOP Publishing
Abstract
We present MULTIMODECODE, a Fortran 95/2000 package for the numerical exploration of multifield inflation models. This program facilitates efficient Monte Carlo sampling of prior probabilities for inflationary model parameters and initial conditions and is the first publicly available code that can efficiently generate large sample-sets for inflation models with fields. The code numerically solves the equations of motion for the background and first-order perturbations of multi-field inflation models with canonical kinetic terms and arbitrary potentials, providing the adiabatic, isocurvature, and tensor power spectra at the end of inflation. For models with sum-...
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Subjects
free text keywords: Astronomy and Astrophysics, Eternal inflation, Cosmological perturbation theory, Adiabatic process, Solver, Inflation, media_common.quotation_subject, media_common, Applied mathematics, Equations of motion, Monte Carlo method, Physics, Toy model
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