Category Archives: Cosmology

Numerical Calculation of Second Order Perturbations

By Ian | Published: July 23, 2009

My new paper, written with Karim Malik, has just been released into the wild. We show that it is possible to numerically simulate second order perturbations for a single scalar field with a canonical action. I’ve been working on this for a long time and learned a lot about the mechanics of inflation in the [...]

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New tools for a new year

By Ian | Published: October 11, 2007

As the new semester is starting in earnest, I think it’s time for me to post the first update for a few months. One of the main differences between post-graduate and under-graduate life is that as postgrads we don’t have a 3 month break over the summer. As seminars finish at the same time as [...]

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Post talk and pre trip

By Ian | Published: July 4, 2007

My talk in Portsmouth was on Tuesday of last week, and with the exception of a bit of trouble with the train on the way down, it seemed to go well enough. I didn’t run wildly over time or commit any other glaring mistakes, but did get a bit of a grilling in the question [...]

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First talk imminent

By Ian | Published: June 20, 2007

So it turns out that I am going to give a talk at UK Cosmo next week. It’s only supposed to be 18 minutes long, which you might imagine wouldn’t be that difficult to put together, but as you can tell from the lack of posts here recently, I’ve been having some problems. The talk [...]

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The End of Cosmology

By Ian | Published: June 6, 2007

Here in Queen Mary, we hold a discussion group every Wednesday during term time. The paper we are discussing this afternoon is a recent essay by Lawrence Krauss and Robert Scherrer, which has been causing a bit of a stir in cosmology circles, both in the blogosphere and the real world. The essay won 5th [...]

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