2018/07/31 by Sonia Paban, Sònia Paban, Robert Rosati · 1 citation
Mathematics · Physics and Astronomy · #Anisotropy #Applied mathematics #Astrophysics #Black Holes and Theoretical Physics #Cosmic microwave background #Cosmology and Gravitation Theories #Field (mathematics) #Gaussian #Hessian matrix #Inflation (cosmology) #Mathematics #Non-Gaussianity #Physics #Planck #Quantum mechanics #Random field #Statistical physics #Statistics #Theoretical and Computational Physics #Theoretical physics #astro-ph.CO #hep-th
paper · pdf · doi:10.1088/1475-7516/2018/09/042
34 pages, 21 figures. Published version
openalex publication_date 2018/09/27 · arxiv created 2018/10/18 · arxiv updated 2018/10/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study multi-field inflation in random potentials generated via a non-equilibrium random matrix theory process. We make a novel modification of the process to include correlations between the elements of the Hessian and the height of the potential, similar to a Random Gaussian Field (RGF). We present the results of over 50,000 inflationary simulations involving 5-100 fields. For the first time, we present results of (100) fields using the full `transport method', without slow-roll approximation. We conclude that Planck compatibility is a common prediction of such models, however significant isocurvature power at the end of inflation is possible.