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Single-Field Inflation After WMAP5
Laila Alabidi, James E. Lidsey
Single-field models of inflation are analysed in light of the WMAP five-year data. Assuming instantaneous reheating, we find that modular/new inflation models with small powers in…
Non-gaussianity from the inflationary trispectrum
David Seery, James E. Lidsey
We present an estimate for the non-linear parameter τ_NL, which measures the non-gaussianity imprinted in the trispectrum of the comoving curvature perturbation, ζ. Our estimate is…
Primordial Non-Gaussianity and Gravitational Waves: Observational Tests of Brane Inflation in String Theory
James E. Lidsey, David Seery
We study brane inflation scenarios in a warped throat geometry and show that there exists a consistency condition between the non-Gaussianity of the curvature perturbation and the…
The inflationary trispectrum
David Seery, James E. Lidsey, Martin S. Sloth
We calculate the trispectrum of the primordial curvature perturbation generated by an epoch of slow-roll inflation in the early universe, and demonstrate that the non-gaussian sign…
Non-Gaussian Inflationary Perturbations from the dS/CFT Correspondence
David Seery, James E. Lidsey
We use the dS/CFT correspondence and bulk gravity to predict the form of the renormalized holographic three-point correlation function of the operator which is dual to the inflaton…
An Observational Test of Holographic Inflation
James E. Lidsey, David Seery
Observational consequences of inflationary cosmology in the holographic dual of the Randall-Sundrum type II braneworld scenario, as motivated by the AdS/CFT correspondence, are inv…