Now you are in the subtree of Physics public knowledge tree. 

MBL as symmetry breaking

1979 The Mobility Edge Problem: Continuous Symmetry and a Conjecture - Franz Wegner

2021 Many-body delocalisation as symmetry breaking S. J. Garratt and J. T. Chalker

We identify the broken symmetry of the transfer matrix, introduce a local order parameter for the transition, and show that the associated
correlation functions are long-ranged only in the ergodic phase

https://arxiv.org/a/chalker_j_1.html

2018 Quantum Zeno Effect and the Many-body Entanglement Transition

Yaodong Li, Xiao Chen, Matthew P. A. Fisher

2015 Quantum Cognition: The possibility of processing with nuclear spins in the brain Matthew P. A. Fisher