2018/09/30 by C. Pallis
Physics and Astronomy · #hep-ph #astro-ph.CO #hep-th
paper · pdf · doi:10.1016/j.physletb.2018.11.059
published as Phys. Lett B 789, 243 (2019) · Published Version. arXiv admin note: text overlap with arXiv:1807.01154
arxiv created 2018/12/26 · arxiv updated 2018/12/31
We show that non-minimal inflation, based on the phi4 potential, may be rendered unitarity conserving and compatible with the Planck results for 4.6x10^(-3)<~r21=c2R/c1R2<~1, if we introduce a linear contribution (c1R phi) to the frame function which takes the form fR=1+c1R phi+c2R phi2. Supersymmetrization of this model can be achieved by considering two gauge singlet superfields and combining a linear-quadratic superpotential term, with a class of logarithmic or semi-logarithmic Kaehler potentials with prefactor for the logarithms including the inflaton field -(2n+3) or -2(n+1) where -0.01<~ n<~0.013.