| Speaker: |
Tsz Yan Lam (IPMU) |
| Title: |
Signature of primordial non-Gaussianity on large scale structure |
| Date (JST): |
Thu, Dec 03, 2009, 13:30 - 15:00 |
| Place: |
Seminar Room at IPMU Prefab. B |
| Related File: |
185.pdf
|
| Abstract: |
Cosmological probes of primordial non-Gaussianity have recently attracted much attention due to its ability to discriminate between different inflationary models. In this talk I will present the signatures of primordial non-Gaussianity on large scale structure. I will first describe its effect on the distribution of the underlying dark matter field. I will show how to generalize Doroshkevich's celebrated formulae for the eigenvalues of the initial shear field assoicated with Gaussian statistics to the local non-Gaussian f_{nl} model. Then I will discuss how to extend the excursion set approach to compute the halo mass function when the primordial perturbation is non-Gaussian. The result will then compare with measurements from N-body simulations.
|
| Contact: |
Maeda |
