Quantum Monte Carlo simulation of topological phase transitions
  We study the electron-electron interaction effects on topological phase transitions by the ab-initio quantum Monte Carlo simulation. We analyze two-dimensional class A topological insulators and three-dimensional Weyl semimetals with the long-range Coulomb interaction. The direct computation of the Chern number shows the electron-electron interaction modifies or extinguishes topological phase transitions. 
Arata Yamamoto and Taro Kimura
cond-mat.mes-hall cond-mat.str-el hep-lat