http://arxiv.org/abs/1510.07956
We point out that in theories in which the gravitational couplings depend on the inflaton, the standard relation between the primordial tensor amplitude and the scale of inflation is lost. This mostly happens because the Planck mass that determines the tensor amplitude does not need to agree with the value of the Planck mass that we infer from the matter gravitational interactions. We also briefly speculate that the same mechanism may shed some light on the cosmological constant problem.
C. Armendariz-Picon
Wed, 28 Oct 15
40/79
Comments: 7 pages, no figures
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