Seminar Daan Meerburg

Daan Meerburg
Cosmological features of High Energy Physics

With the upcoming Planck data and several LSS surveys we should be able to further constrain the physics of inflation. Two very powerful observables are the power spectrum and the bispectrum of (density) fluctuations. The detailed shape of these spectra is very sensitive to the physics of inflation. Although the power spectrum has been constrained to high accuracy, certain inflationary scenarios predict small features on top of the baryonic acoustic oscillations which are not excluded by current constrains. More so, such models also predict large non-gaussianities which can be probed using the bispectrum. I will review some of these models and explain how we can use current and future constraints to put limits on parameter space. 

Tuesday, March 29, 2011 - 12:00 - 13:00