Gravitational wave background in perfect fluid quantum cosmologies

Abstract

We discuss the gravitational wave background produced by bouncing models based on a full quantum evolution of a universe filled with a perfect fluid. Using an ontological interpretation for the background wave function allows us to solve the mode equations for the tensorial perturbations, and we find the spectral index as a function of the fluid equation of state.

Comments: 12 pages, 5 figures, to appear in Phys. Rev. D (2006)