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False Vacuum Inflation with a Quartic Potential
David Roberts, Andrew R Liddle, David H Lyth
We consider a variant of Hybrid Inflation, where inflation is driven by two interacting scalar fields, one of which has a `Mexican hat' potential and the other a quartic potential.…
Inflation as the Unique Causal Mechanism for Generating Density Perturbations on Scales Well Above the Hubble Radius
Andrew R Liddle
An examination is made of the widely held belief that inflation is the only possible causal mechanism capable of generating density perturbations on scales well in excess of the Hu…
Trends in Large Scale Structure Observations and the Likelihood of Early Reionization
Andrew R Liddle, David H Lyth
With the imminent promise of constraints on the epoch of reionization from observations of microwave background anisotropies, the question of whether or not the standard Cold Dark…
Interpreting Large Scale Structure Observations
David H Lyth, Andrew R Liddle
The standard model of large scale structure is considered, in which the structure originates as a Gaussian adiabatic density perturbation with a nearly scale invariant spectrum. Th…
Formalising the Slow-Roll Approximation in Inflation
Andrew R. Liddle, Paul Parsons, John D. Barrow
The meaning of the inflationary slow-roll approximation is formalised. Comparisons are made between an approach based on the Hamilton-Jacobi equations, governing the evolution of t…
Reconstructing the Inflaton Potential
Edward W Kolb, Mark Abney, Edmund J Copeland +2
A review is presented of recent work by the authors concerning the use of large scale structure and microwave background anisotropy data to determine the potential of the inflaton…