http://arxiv.org/abs/1604.03873
We show that the inclusion of viscosity into the equation of motion for the inflaton field might lead to a constant Hubble rate expansion, thus to a period of inflation. The dynamics only involves a kinetic term and does not require an external potential for the inflaton to slow-roll. The primordial scale-invariant power spectrum follows from the equation of motion, and the relevant cosmological parameters are computed from the model.
L. Visinelli
Thu, 14 Apr 16
52/53
Comments: 4 pages
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