Non-Invertible Duality Defects in 3+1 Dimensions

Thorngren and Wang. https://arxiv.org/abs/2106.12577

 Plavnik, Schopieray, Yu, Zhang, https://arxiv.org/abs/2111.05228

Apruzzi, Bonetti, García Etxebarria, Hosseini, Schäfer-Nameki, https://arxiv.org/abs/2112.02092

Bah, Bonetti, Leung, Weck, https://arxiv.org/abs/2112.07796