Intermediate-Generalized Chaplygin Gas inflationary universe model
Ramon Herrera, Marco Olivares, Nelson Videla
TL;DR
This paper explores an intermediate inflationary universe model using generalized Chaplygin gas with scalar and tachyon fields, constrained by WMAP 7-year data, to understand early universe dynamics.
Contribution
It introduces a novel inflationary model based on generalized Chaplygin gas with two different energy components and constrains it with recent observational data.
Findings
Model successfully fits WMAP 7-year data
Conditions for inflationary epoch are established
Constraints on model parameters are derived
Abstract
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.
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