Shift Symmetric Orbital Inflation
| Autor: | Welling, Yvette Maria |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | String Phenomenology 2019, Geneva, CERN, Switzerland, 2019-06-24-2019-06-28 |
| DOI: | 10.3204/pubdb-2019-02646 |
| Popis: | String Phenomenology 2019, Geneva, CERN, Switzerland, 24 Jun 2019 - 28 Jun 2019 Recent swampland conjectures highlight again the importance of finding viable scenarios for inflation that are not strictly single-field. In particular, one may wonder whether there are multi-field inflationary scenarios that have a similar phenomenology to single field inflation. We present a family of exact models of inflation - dubbed Orbital Inflation - in which the multi-field effects are significant, but the phenomenology remains similar to single field inflation. This simple predictions have a dynamic origin, and are non-trivial, as the isocurvature perturbations are exactly massless. The effective action of perturbations inherits a symmetry from an equivalence between background solutions. We comment on how our results could be connected to symmetries of the UV theory. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|