Corner Structure of Four-Dimensional General Relativity in the Coframe Formalism

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

Bah, Bonetti, Leung, Weck, https://arxiv.org/abs/2111.01790

Del Zotto, Heckman, Meynet, Moscrop, Zhang, https://arxiv.org/abs/2201.08372

Córdova, Ohmori, Rudelius, https://arxiv.org/abs/2202.05866