Publications (5)
Approximating the Sachdev-Ye-Kitaev model with Majorana wires
Aaron Chew, Andrew Essin, Jason Alicea
The Sachdev-Ye-Kitaev (SYK) model describes a collection of randomly interacting Majorana fermions that exhibits profound connections to quantum chaos and black holes. We propose a…
Majorana spin liquids and projective realization of SU(2) spin symmetry
Gang Chen, Andrew Essin, Michael Hermele
We revisit the fermionic parton approach to S = 1/2 quantum spin liquids with SU(2) spin rotation symmetry, and the associated projective symmetry group (PSG) classification. We po…
Numerical detection of symmetry enriched topological phases with space group symmetry
Ling Wang, Andrew Essin, Michael Hermele +1
Topologically ordered phases of matter, in particular so-called symmetry enriched topological (SET) phases, can exhibit quantum number fractionalization in the presence of global s…
Anomalous Quasiparticle Symmetries and Non-Abelian Defects on Symmetrically Gapped Surfaces of Weak Topological Insulators
David F. Mross, Andrew Essin, Jason Alicea +1
We show that boundaries of 3D weak topological insulators can become gapped by strong interactions while preserving all symmetries, leading to Abelian surface topological order. Th…
Composite Dirac liquids: parent states for symmetric surface topological order
David F. Mross, Andrew Essin, Jason Alicea
We introduce exotic gapless states---`composite Dirac liquids'---that can appear at a strongly interacting surface of a three-dimensional electronic topological insulator. Composit…