| Speaker: | Kendrick Smith (University of Cambridge) |
|---|---|
| Title: | rimordial non-Gaussianity and constraints from WMAP |
| Date (JST): | Tue, Jun 16, 2009, 13:30 - 14:30 |
| Place: | Seminar Room at IPMU Prefab. B |
| Abstract: |
We discuss different mechanisms for generating non-Gaussian initial conditions in the universe. We argue that to lowest order in slow-roll parameters, three "shapes" of the three-point function are allowed, peaking roughly on squeezed, equilateral, and flattened configurations of the momenta k_1, k_2, k_3. We present and interpret optimal constraints on these three shapes from WMAP. |
