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A family of super Schrodinger invariant Chern-Simons matter systems
Yu Nakayama, Shinsei Ryu, Makoto Sakaguchi +1
We investigate non-relativistic limits of the N=3 Chern-Simons matter system in 1+2 dimensions. The relativistic theory can generate several inequivalent super Schodinger invariant…
Three-dimensional topological phase on the diamond lattice
Shinsei Ryu
An interacting bosonic model of Kitaev type is proposed on the three-dimensional diamond lattice. Similarly to the two-dimensional Kitaev model on the honeycomb lattice which exhib…
Disordered Systems and the Replica Method in AdS/CFT
Mitsutoshi Fujita, Yasuaki Hikida, Shinsei Ryu +1
We formulate a holographic description of effects of disorder in conformal field theories based on the replica method and the AdS/CFT correspondence. Starting with copies of co…
Boundary criticality at the Anderson transition between a metal and a quantum spin Hall insulator in two dimensions
Hideaki Obuse, Akira Furusaki, Shinsei Ryu +1
Static disorder in a noninteracting gas of electrons confined to two dimensions can drive a continuous quantum (Anderson) transition between a metallic and an insulating state when…
Classification of topological insulators and superconductors in three spatial dimensions
Andreas P. Schnyder, Shinsei Ryu, Akira Furusaki +1
We systematically study topological phases of insulators and superconductors (SCs) in 3D. We find that there exist 3D topologically non-trivial insulators or SCs in 5 out of 10 sym…
Quantum Hall Effect of Massless Dirac Fermions in a Vanishing Magnetic Field
Kentaro Nomura, Shinsei Ryu, Mikito Koshino +2
The effect of strong long-range disorder on the quantization of the Hall conductivity in graphene is studied numerically. It is shown that increasing Landau-level mixing p…