Hi all,
Hassan Firouzjahi - Wednesday 1st February - 4.30pm Maths Room 103
In a late addition to our seminar schedule Hassan Firouzjahi will be
speaking this Wednesday at 4.30pm on the topic of "The effects of
waterfall phase transition on curvature perturbations and
non-Gaussianity". The abstract is below.
The seminar will take place as usual in Maths Seminar Room 103 and
start at 4.30pm.
For more information on our upcoming seminars please visit our wiki at
http://cosrel.maths.qmul.ac.uk .
Best wishes,
Ian
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Dr Ian Huston
Postdoctoral Researcher
Cosmology and Relativity Group
Astronomy Unit, School of Physics and Astronomy
Queen Mary, University of London
[log in to unmask]
http://www.maths.qmul.ac.uk/~ith
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The effects of waterfall phase transition on curvature
perturbations and non-Gaussianity
Hassan Firouzjahi
Abstract: In this talk we consider different variants of hybrid
inflation model where a waterfall phase
transition takes place either during or at the end of inflation.
Depending on the sharpness of the waterfall
transition and whether it happens early during inflation or towards the
end of inflation it can have
interesting effects on large scale curvature perturbations and
non-Gaussianity. In particular, we show that
a sharp phase transition happening early on during inflation produces a
large spike non-Gaussianity.
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