Tag: pyflation

Version 0.2.3 released

Posted by – May 22, 2012

Version 0.2.3 of Pyflation has been released and is available on the downloads page and via PyPI using pip install or easy_install.

This release fixes a major issue for multi-field models in which the nfields parameter would not be passed to model instances causing failure of model runs. The commit for the necessary change is viewable on Bitbucket.

Version 0.2.2 released

Posted by – May 3, 2012

I have just added the latest version of Pyflation to the Downloads page. Version 0.2.2 has minor improvements to the command line options for pyflation_firstorder and now includes the C files generated by Cython. Hopefully this means that installing from the Python Package Index will now work.


$ pip install pyflation


$ easy_install pyflation

to download and install from PyPi. You will need to have installed all the requirements beforehand.

The code for this update is also now available on the Bitbucket repository.

Version 0.2.1 released

Posted by – February 16, 2012

The latest version of Pyflation is now available from the Downloads page and on the Python Package Index.

In this version there are many improvements in the documentation, and there are now docs available online.

Version 0.2 released

Posted by – November 30, 2011

A new version of Pyflation has been released! Get it from the Downloads page or right here.

Version 0.2.0 adds many new features including multi-field evolution of first order perturbations. Source term generation and therefore second order evolution are still only possible for single field models for now. Each model instance now has a nfields variable which is passed to the potential function. New two field and n-field potentials have been added to the cmpotentials module.

Another new feature is the analysis package which encapsulates functions to calculate power spectra of adiabatic and isocurvature perturbations and calculate the spectral indices for these quantities. This package features extensive unit test coverage (in the test directory) and has been used to create the results for a new submission to the arXiv.

Version 0.1.0 now available

Posted by – March 4, 2011

The first release of Pyflation is now available on the Downloads page. This is version 0.1.0 and coincides with the submission of our latest paper using Pyflation to the arXiv preprint repository.

Instructions for installing the package are available in the INSTALL.txt file and tips on usage are in the README.txt file.

Please remember that if you publish results obtained with Pyflation you are asked to cite one of the relevant publications.

New site

Posted by – February 15, 2011

This is the new site for Pyflation, a soon to be released Python package.

Pyflation numerically simulates an inflationary expansion of the universe using a single scalar field. Both first and second order perturbations are calculated, using the full non-slowroll equations of motion.