@inproceedings{Thomas:2022yB, author = "Thomas, Stuart and Monahan, Christopher", title = "{Topology of the $O(3)$ non-linear sigma model under the gradient flow}", doi = "10.22323/1.396.0076", booktitle = "Proceedings of The 38th International Symposium on Lattice Field Theory {\textemdash} PoS(LATTICE2021)", year = 2022, volume = "396", pages = "076" }