Chaplygin gas inspired scalar fields inflation via well-known potentials

Abstract

Brane inflationary universe models in the context of modified Chaplygin gas and generalized cosmic Chaplygin gas are being studied. We develop these models in view of standard scalar and tachyon fields. In both models, the implemented inflationary parameters such as scalar and tensor power spectra, scalar spectral index and tensor to scalar ratio are derived under slow roll approximations. We also use chaotic and exponential potential in high energy limits and discuss the characteristics of inflationary parameters for both potentials. These models are compatible with recent astronomical observations provided by \(\mbox{WMAP}7{+}9\) and Planck data, i.e., \(\eta_{s}=1.027\pm0.051, 1.009\pm0.049, 0.096\pm0.025\) and \(r<0.38, 0.36, 0.11\).