4 research outputs found
Unique contributions to the scalar bispectrum in `just enough inflation'
A scalar field rolling down a potential with a large initial velocity results
in inflation of a finite duration. Such a scenario suppresses the scalar power
on large scales improving the fit to the cosmological data. We find that the
scenario leads to a hitherto unexplored situation wherein the boundary terms
dominate the contributions to the scalar bispectrum over the bulk terms. We
show that the consistency relation governing the non-Gaussianity parameter
is violated on large scales and that the contributions at the
initial time can substantially enhance the value of .Comment: v1: 5 pages, 4 figure
Patterns of neonatal hypoxic–ischaemic brain injury
Enormous progress has been made in assessing the neonatal brain, using magnetic resonance imaging (MRI). In this review, we will describe the use of MRI and proton magnetic resonance spectroscopy in detecting different patterns of brain injury in (full-term) human neonates following hypoxic–ischaemic brain injury and indicate the relevance of these findings in predicting neurodevelopmental outcome