Speaker
Oksana Iarygina
(Stockholm University)
Description
Primordial non-Gaussianity is a powerful tool to discriminate between models of inflation by probing the dynamics and field content of the very early Universe. In this talk I will show that theories of inflation with multiple, rapidly turning fields can generate large, potentially observable amounts of non-Gaussianity. I will discuss a novel, analytical formula for bispectrum generated from multi-field mixing on super-horizon scales for a general theory with two fields, an arbitrary field-space metric and potential. I will explain why detection of local non-Gaussianity with an amplitude of order one would rule out all attractor models of single-field inflation and discuss what such detection would tell us about multiple-field inflation.
Primary authors
Oksana Iarygina
(Stockholm University)
David Marsh
(Stockholm University)
Gustavo Vieira Suñe
(Stockholm University)
