24-28 June 2019
CERN
Europe/Zurich timezone
There is a live webcast for this event.

Geometrical destabilisation of light fields in String Inflation

25 Jun 2019, 17:30
15m
500/1-001 - Main Auditorium (CERN)

500/1-001 - Main Auditorium

CERN

400
Show room on map

Speaker

Veronica Guidetti (University of Bologna)

Description

A typical feature of 4D string models is the presence, at tree-level, of a plethora of massless fields called moduli. Some of them are axion-like fields which become massive only via tiny non-perturbative effects which tend to make them naturally very light. When these fields live on a curved manifold a geometrical destabilisation of the inflationary trajectory can be induced since the growth of the isocurvature perturbations quickly brings the system in the non-perturbative regime.

Presentation Materials