89 citations · 211 across the 7 of their papers we have counts for
7 papers
Decoding Network Codes by Message Passing
Daniel Salmond, Alex Grant, Terence Chan +1
In this paper, we show how to construct a factor graph from a network code. This provides a systematic framework for decoding using message passing algorithms. The proposed message…
Black hole constraints on the running-mass inflation model
Samuel M Leach, Ian J Grivell, Andrew R Liddle
The running-mass inflation model, which has strong motivation from particle physics, predicts density perturbations whose spectral index is strongly scale-dependent. For a large pa…
Inflaton potential reconstruction without slow-roll
Ian J Grivell, Andrew R Liddle
We describe a method of obtaining the inflationary potential from observations which does not use the slow-roll approximation. Rather, the microwave anisotropy spectrum is obtained…
On the reliability of inflaton potential reconstruction
Edmund J. Copeland, Ian J. Grivell, Edward W. Kolb +1
If primordial scalar and tensor perturbation spectra can be inferred from observations of the cosmic background radiation and large-scale structure, then one might hope to reconstr…
Cosmological parameter estimation and the spectral index from inflation
Edmund J Copeland, Ian J Grivell, Andrew R Liddle
Accurate estimation of cosmological parameters from microwave background anisotropies requires high-accuracy understanding of the cosmological model. Normally, a power-law spectrum…
Accurately determining inflationary perturbations
Andrew R Liddle, Ian J Grivell
Cosmic microwave anisotropy satellites promise extremely accurate measures of the amplitude of perturbations in the universe. We use a numerical code to test the accuracy of existi…
Accurate determination of inflationary perturbations
Ian J Grivell, Andrew R Liddle
We use a numerical code for accurate computation of the amplitude of linear density perturbations and gravitational waves generated by single-field inflation models to study the ac…