Non-minimal Higgs inflation in the context of warm scenario in the light of Planck data

We investigate the non-minimally Higgs inflaton (HI) model in the context of warm inflation scenario. Warm little inflaton (WLI) model considers the little Higgs boson as inflaton. The concerns of warm inflation model can be eliminated in WLI model. There is a special case of dissipation parameter in WLI model $\Gamma=\Gamma_0 T$. Using this parameter, we study the potential of HI in Einstein frame . Finally we will constrain the parameters of our model using current Planck observational data.Comment: 6 pages, 4 figures, the paper has been accepted by EPJ

Relaxing the TCC Bound on Inflationary Cosmology?

We demonstrate that the strict upper bounds on the energy scale of inflation and on the tensor-to-scalar ratio can be somewhat relaxed if we assume that - after an initial period of slow rolling when scales probed today in CMB experiments exit the Hubble radius - the equation of state of the background changes to correspond to an almost marginally accelerating universe. Constructing an actual model in which this happens appears, however, to be unnatural.Comment: 5 pages, no figures; a few minor algebra errors corrected, matches with the published version (European Journal of Physics C