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Perturbative instability of non-ergodic phases in non-Abelian quantum chains
Brayden Ware, Dmitry Abanin, Romain Vasseur
An important challenge in the field of many-body quantum dynamics is to identify non-ergodic states of matter beyond many-body localization (MBL). Strongly disordered spin chains w…
Superuniversality of superdiffusion
Enej Ilievski, Jacopo De Nardis, Sarang Gopalakrishnan +2
Anomalous finite-temperature transport has recently been observed in numerical studies of various integrable models in one dimension; these models share the feature of being invari…
Topological edge modes without symmetry in quasiperiodically driven spin chains
Aaron J. Friedman, Brayden Ware, Romain Vasseur +1
We construct an example of a 1 quasiperiodically driven spin chain whose edge states can coherently store quantum information, protected by a combination of localization, dynami…
Quantum criticality in the 2d quasiperiodic Potts model
Utkarsh Agrawal, Sarang Gopalakrishnan, Romain Vasseur
Quantum critical points in quasiperiodic magnets can realize new universality classes, with critical properties distinct from those of clean or disordered systems. Here, we study q…
Superuniversality from disorder at two-dimensional topological phase transitions
Byungmin Kang, S. A. Parameswaran, Andrew C. Potter +2
We investigate the effects of quenched randomness on topological quantum phase transitions in strongly interacting two-dimensional systems. We focus first on transitions driven by…
Topological and symmetry-enriched random quantum critical points
Carlos M. Duque, Hong-Ye Hu, Yi-Zhuang You +3
We study how symmetry can enrich strong-randomness quantum critical points and phases, and lead to robust topological edge modes coexisting with critical bulk fluctuations. These a…