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Bulk-boundary correspondence for intrinsically-gapless SPTs from group cohomology
Rui Wen, Andrew C. Potter
Intrinsically gapless symmetry protected topological phases (igSPT) are gapless systems with SPT edge states with properties that could not arise in a gapped system with the same s…
Gate-tunable heavy fermion quantum criticality in a moiré Kondo lattice
Ajesh Kumar, Nai Chao Hu, Allan H. MacDonald +1
We propose a realization of Kondo-lattice physics in moiré superlattices at the interface between a WX homobilayer and MoX monolayer (where X=S,Se). Under appropriate gatin…
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…
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…
Fractal non-Fermi liquids from moiré-Hofstadter phonons
Ajesh Kumar, Zihan Cheng, Andrew C. Potter
We theoretically explore 2d moiré heterostructures in lattice-commensurate magnetic fields as platforms for quantum simulation of a paradigmatic model of non-Fermi liquid physics:…
Distinguishing localization from chaos: challenges in finite-size systems
D. A. Abanin, J. H. Bardarson, G. De Tomasi +7
We re-examine attempts to study the many-body localization transition using measures that are physically natural on the ergodic/quantum chaotic regime of the phase diagram. Using s…