Tag Archives: Cosmology

Trispectrum during Inflation

After a lot of work, “Large trispectrum in two-field slow-roll inflation” was released on the arXiv yesterday as arXiv:1203.6844. In this article Joe Elliston, Laila Alabidi, David Mulryne, Reza Tavakol and I look at the generation of higher order statistics during inflation in the early universe. In the early universe the curvature perturbations, which later [...]

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Two new papers on the arXiv

Last Tuesday was a bit hectic for me as I tried to coordinate the last minute changes needed to put two papers on the arXiv servers for the next day. The two articles which are now available are numbered 1111.6919 and 1111.6940: Calculating Non-adiabatic Pressure Perturbations during Multi-field Inflation Ian Huston, Adam J. Christopherson Abstract: [...]

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Outreach lecture to teachers

I gave a lecture to secondary school teachers this week as part of the Goldsmith’s Company’s Science for Society Course on astrophysics. Having heard about the Big Bang model and some of its problems from my colleague Dr David Mulryne, I was given the task of outlining how the inflationary paradigm tries to solve these [...]

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New paper and Pyflation software package

My latest paper has just hit the arXiv and is now available. The paper builds on the numerical work I previously completed on cosmological perturbations beyond linear order. The new results do not assume slow-roll in the calculation of the source term for the second order equations of motion and so allow a much greater [...]

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Durham UK Cosmo meeting

Durham University, and in particular the Institute for Particle Physics Phenomenology hosted the annual two-day UK Cosmology meeting this year. There were lots of very interesting talks, and I hope to give a flavour of some of the issues that were mentioned over the course of the meeting. The list of participants and the programme [...]

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