Speaker
Andreas Pargner
(Karlsruhe Insitute of Technology)
Description
We present a semi-analytical method to calculate the average axion energy density as well as the power spectrum of density fluctuations when vacuum re-alignment happens after inflation. Furthermore, we develop a modified Press & Schechter approach, suitable to describe the collapse of non-linear density fluctuations during radiation domination. This allows us to make a prediction for the distribution of mass and size of axion miniclusters. The presentation is based on the work published under the arXiv number 1708.04466.
Primary authors
Andreas Pargner
(Karlsruhe Insitute of Technology)
Prof.
Thomas Schwetz-Mangold
(KIT)
