Speaker
Andreas Pargner
(Karlsruhe Institute of Technology)
Description
We present a semi-analytical method to calculate the average axion energy density, as well as the power spectrum, from the re-alignment mechanism in a scenario where the Peccei-Quinn symmetry breaking 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 with the arXiv number 1708.04466.
Primary authors
Andreas Pargner
(Karlsruhe Institute of Technology)
Prof.
Thomas Schwetz-Mangold
(KIT)
