Tag Archives: python

New paper and Pyflation software package

By Ian | Published: March 7, 2011

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 [...]

Posted in arXiv, Cosmology, Research | Also tagged arXiv, Cosmology, numpy, perturbations, preprint, publication, pyflation, scipy, software | 1 Comment

Minor Tick Labels in Matplotlib

By Ian | Published: February 28, 2011

This is a slightly more technical post than usual but having figured out how to do something quite esoteric in Matplotlib I thought I would write it down to save me remembering. I have been making quite a few plots recently for a paper which should hit the arXiv very soon. The Python plotting package [...]

Posted in Tools | Also tagged code, graphs, logplot, matplotlib, plotting | Leave a comment

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 [...]