Cosmological constraints on Neutrino - Dark Matter interactions

I summarize the results of a recent analysis where the cosmological effects of interactions of neutrinos with cold Dark Matter (DM) is investigated. This interaction produces diffusion-damped oscillations in the matter power spectrum, analogous to the acoustic oscillations in the baryon-photon fluid. I discuss the bounds from the Sloan Digital Sky Survey on the corresponding opacity defined as the ratio of neutrino-DM scattering cross section over DM mass, and compare with the constraint from observation of neutrinos from supernova 1987A.Comment: Talk given at the Neutrino Oscillation Workshop NOW2006, Otranto, Italy, September 9-16 200

The future of particle physics

I review the prospects for future progress in accelerator-based particle physicsComment: Opening talk at the 10th Pisa meeting on advanced detectors, La Biodola, May 22-27 200