Inflation in multi-field modified DBM potentials
| Autor: | Sonia Paban, Robert Rosati |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
High Energy Physics - Theory
Physics Hessian matrix Inflation (cosmology) Cosmology and Nongalactic Astrophysics (astro-ph.CO) Field (physics) 010308 nuclear & particles physics Gaussian Process (computing) FOS: Physical sciences Astronomy and Astrophysics 01 natural sciences Power (physics) symbols.namesake High Energy Physics - Theory (hep-th) 0103 physical sciences symbols Statistical physics Planck 010306 general physics Random matrix Astrophysics - Cosmology and Nongalactic Astrophysics |
| Zdroj: | Journal of Cosmology and Astroparticle Physics. 2018:042-042 |
| ISSN: | 1475-7516 |
| DOI: | 10.1088/1475-7516/2018/09/042 |
| Popis: | 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 $\mathcal{O}(100)$ 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. Comment: 34 pages, 21 figures. Published version |
| Databáze: | OpenAIRE |
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