Intermediate-Generalized Chaplygin Gas inflationary universe model

Understand

An intermediate inflationary universe model in the context of a generalized Chaplygin gas is considered.

• For the matter we consider two different energy densities; a standard scalar field and a tachyon field, respectively.
• In general, we discuss the conditions of an inflationary epoch for these models.
• We also, use recent astronomical observations from Wilkinson Microwave Anisotropy Probe seven year data for constraining the parameters appearing in our models.