ACP Seminar (Astronomy - Cosmology - Particle Physics)

Speaker: Joel Meyers (Austin)
Title: Non-Gaussianity and the Adiabatic Limit
Date (JST): Wed, Nov 28, 2012, 13:30 - 14:30
Place: Seminar Room A
Related File: 660.pdf
Abstract: A detection of primordial non-Gaussianity would teach us a great deal about the physics of the early universe. Of particular interest is local bispectrum which is predicted to be small in all models of single field inflation. Multiple field inflation models are richer and also inherently more complicated than single field models due to the presence of non-adiabatic fluctuations. We discuss the how the approach to adiabaticity affects the evolution of observables during multiple field inflation, with particular focus on local non-Gaussianinty.