TY - JOUR
T1 - Bosonic Integer Quantum Hall Effect in an Interacting Lattice Model
AU - He, Yin Chen
AU - Bhattacharjee, Subhro
AU - Moessner, R.
AU - Pollmann, Frank
N1 - Publisher Copyright:
© 2015 American Physical Society.
PY - 2015/9/10
Y1 - 2015/9/10
N2 - We study a bosonic model with correlated hopping on a honeycomb lattice, and show that its ground state is a bosonic integer quantum Hall (BIQH) phase, a prominent example of a symmetry-protected topological (SPT) phase. By using the infinite density matrix renormalization group method, we establish the existence of the BIQH phase by providing clear numerical evidence: (i) a quantized Hall conductance with |σxy|=2, (ii) two counterpropagating gapless edge modes. Our simple model is an example of a novel class of systems that can stabilize SPT phases protected by a continuous symmetry on lattices and opens up new possibilities for the experimental realization of these exotic phases.
AB - We study a bosonic model with correlated hopping on a honeycomb lattice, and show that its ground state is a bosonic integer quantum Hall (BIQH) phase, a prominent example of a symmetry-protected topological (SPT) phase. By using the infinite density matrix renormalization group method, we establish the existence of the BIQH phase by providing clear numerical evidence: (i) a quantized Hall conductance with |σxy|=2, (ii) two counterpropagating gapless edge modes. Our simple model is an example of a novel class of systems that can stabilize SPT phases protected by a continuous symmetry on lattices and opens up new possibilities for the experimental realization of these exotic phases.
UR - http://www.scopus.com/inward/record.url?scp=84942162903&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.115.116803
DO - 10.1103/PhysRevLett.115.116803
M3 - Article
AN - SCOPUS:84942162903
SN - 0031-9007
VL - 115
JO - Physical Review Letters
JF - Physical Review Letters
IS - 11
M1 - 116803
ER -