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by T-A 746 days ago
No, the (hypothetical) topological defects mentioned in Section 7 of the article are configurations of (hypothetical) scalar fields (like the Higgs field, but with different equations of motion):

https://en.wikipedia.org/wiki/Kibble%E2%80%93Zurek_mechanism

Modeling dark matter as a scalar field is bog-standard stuff, what's unusual here is the way it's arranged.