Theory Seminar (High Energy/Cosmology) |
Events During the Week of October 14th through October 21st, 2018
Monday, October 15th, 2018
- No events scheduled
Tuesday, October 16th, 2018
- No events scheduled
Wednesday, October 17th, 2018
- No events scheduled
Thursday, October 18th, 2018
- No events scheduled
Friday, October 19th, 2018
- Consistency relations in multi-field inflation
- Time: 2:00 pm - 3:25 pm
- Place: 5310 Chamberlin Hall
- Speaker: Jinn-Ouk Gong, KASI
- Abstract: The consequences of spatial coordinate transformation in multi-field inflation are studied. Among the spontaneously broken de Sitter isometries, only dilatation in the comoving gauge preserves the form of the metric and thus results in quantum-protected Slavnov-Taylor identities. The corresponding consistency relations between correlation functions of cosmological perturbations are derived in two different ways, by the connected and one-particle-irreducible Green's functions. The lowest-order consistency relations are explicitly given, and even in multi-field inflation the consistency relations in the soft limit are independent of the detail of the matter sector.