Power-law plateau and inverse symmetric inflation

摘要

Warm generalized Chaplygin gas inflation is being studied by assuming power-law plateau and inverse symmetric potentials with standard scalar field model. We consider strong dissipative regime with generalized dissipative coefficient and extract the various inflationary parameters such as scalar power spectrum, spectral index, tensor-to-scalar ratio and running of spectral index. It is found that both inflationary potentials favor the strong dissipative regime. Also, we construct the n(s)-alpha(s) (running of spectral index versus spectral index) and n(s)-r (tensor-to-scalar ratio versus spectral index) planes and found that the trajectories of these planes favor WMAP 7 + WMAP 9 and latest Planck data.