The Running Spectral Index as a Probe of Physics at High Energies

Abstract

The WMAP results on the scalar spectral index n and its running with scale, though preliminary, open a very interesting window to physics at very high energies. We address the problem of finding simple inflaton potentials well motivated by particle physics which can accommodate WMAP data.

Comments: 6 LaTeX pages, 3 figures. Proceedings of Moriond 2006, Electroweak Session. 11-18 March, La Thuile (Italy)