CDM/baryon isocurvature fluctuations and non-Gaussianity

by Prof. Tomo Takahashi (Saga university)

Thursday 9 Dec 2010, 16:00 → 17:30 Europe/Brussels

E/3rd floor-E.349 - Seminar room (E.349) (Marc de Hemptinne (chemin du Cyclotron, 2, Louvain-la-Neuve))

We discuss primordial fluctuations and its non-Gaussianity in models with CDM/baryon isocurvature fluctuations. In some scenarios of dark matter or baryogenesis, isocurvature fluctuations can be generated and they can be tested/constrained from cosmological observations such as CMB. Among the observables of primordial fluctuations, we focus on non-Gaussianity, which has been attracting much attention recently, in such scenarios and discuss its implications for some dark matter and baryogenesis models.