Chaplygin gas inspired non-canonical scalar field warm inflation

Abstract

We consider a warm inflation universe model in the presence of generalized Chaplygin gas and modified Chaplygin gas by taking Dirac-Born-Infeld non-canonical scalar field. For developing various inflationary parameters, we assume quadratic potential and quartic potential and Anti-de-Sitter warp factor for the Dirac-Born-Infeld inflation. We develop the number of e-folds, scalar as well as tensor power spectrum, scalar spectral index and tensor-scalar ratio in the terms of ϕ under slow-roll approximation by assuming the constant sound speed. We establish the graphical behavior of r−N,ns−N and α−N for both Chaplygin gas models. The results of r−N,ns−N and α−N are 0.972−0.02+0.02,−0.0005−0.001+0.001,0.0004−0.0004+0.0004 (for generalized Chaplygin gas with quadratic potential) and 0.97−0.05+0.05,0.0045−0.0055+0.0055,0.0045−0.0045+0.0045 (generalized Chaplygin gas with quartic potential), respectively. Also, the results of inflationary parameters are 0.97−0.02+0.02,0.0015−0.0025+0.0025,0.125−0.125+0.125 (for modified Chaplygin gas with quadratic potential) and 0.94−0.05+0.05,0.01−0.015+0.015,0.0185−0.0185+0.0185 (modified Chaplygin gas with quartic potential), respectively. It is found that these results are well matched with 68% and 95% CL constraints of the Planck 2018 TT,TE,EE+lowP+lensing data.