3 papers
gr-qc2000
Gravitational waves in preheating
Daniel Tilley, Roy Maartens
We study the evolution of gravitational waves through the preheating era that follows inflation. The oscillating inflaton drives parametric resonant growth of scalar field fluctuat…
gr-qc1998
Perturbations in inflationary cosmologies with smooth exit
Daniel Tilley, Roy Maartens
We give a comprehensive analysis of how scalar and tensor perturbations evolve in cosmologies with a smooth transition from power-law-like and de Sitter-like inflation to a radiati…
gr-qc1997
Exact Perturbations for inflation with smooth exit
Roy Maartens, Daniel Tilley
Toy models for the Hubble rate or the scalar field potential have been used to analyze the amplification of scalar perturbations through a smooth transition from inflation to the r…