| Generalised Scalar Field Potentials and Inflation (2007) | |||||||||||||||
Abstract | |||||||||||||||
| We investigate the range of inflationary universe models driven by scalar fields possessing a general interaction potential of the form V (OE) = V 0 OE n exp(\GammaOE m ). Power-law, de Sitter and intermediate inflationary universes emerge as special cases together with several new varieties of inflation. Analysing the behaviour of these models at the extrema of OE we derive sufficient constraints on the m - n parameter space such that inflation may occur as both an early and late-time phenomenon. We also compute the scalar and tensor perturbations produced in the model and compare these results with recent observations. PACS number 98.80.Cq 1 Introduction Inflationary cosmologies have become the most popular models of the early universe. Their ability to solve many of the problems inherent in the standard cosmology [1, 2], whilst simultaneously offering a mechanism for the generation of the seed fluctuations for structure formation [3], consistent with recent observations [4, 5... | |||||||||||||||
Publication details | |||||||||||||||
| |||||||||||||||