Speaker
Pierre Auclair
(APC)
Description
Now that GW observatories at all frequencies have become able to detect/constrain the existence of cosmic strings, it is not acceptable that the community has not yet reached a consensus on the cosmic string abundance. In this talk, we will start by an in-depth review of two popular models and highlight their differences and limits. I will try to convince you that something is missing, and that fragmentation can fill in this gap. Then, I will present some new and unpublished results from Nambu-Goto simulations motivating a new model of cosmic string loop fragmentation.
