Nflation: observable predictions from the random matrix mass spectrum
arXiv:0707.1982 · doi:10.1103/PhysRevD.76.063515
Abstract
We carry out numerical investigations of the perturbations in Nflation models where the mass spectrum is generated by random matrix theory. The tensor-to-scalar ratio and non-gaussianity are already known to take the single-field values, and so the density perturbation spectral index is the main parameter of interest. We study several types of random field initial conditions, and compute the spectral index as a function of mass spectrum parameters. Comparison with microwave anisotropy data from the Wilkinson Microwave Anisotropy Probe shows that the model is currently viable in the majority of its parameter space.
5 pages RevTeX with 4 figures. Minor corrections to match version to appear in Physical Review D
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