332 citations · 797 across the 21 of their papers we have counts for
19 papers · 1 filter
QMC study of the chiral Heisenberg Gross-Neveu universality class
Yuichi Otsuka, Kazuhiro Seki, Sandro Sorella +1
We investigate a quantum criticality of an antiferromagnetic phase transition in the Hubbard model on a square lattice with a -wave pairing field by large-scale auxiliary-field…
Higher-Order Topological Mott Insulator on the Pyrochlore Lattice
Yuichi Otsuka, Tsuneya Yoshida, Koji Kudo +2
We provide the first unbiased evidence for a higher-order topological Mott insulator in three dimensions by numerically exact quantum Monte Carlo simulations. This insulating phase…
Dirac electrons in the square lattice Hubbard model with a -wave pairing field: chiral Heisenberg universality class revisited
Yuichi Otsuka, Kazuhiro Seki, Sandro Sorella +1
We numerically investigate the quantum criticality of the chiral Heisenberg universality class with the total number of fermion components =8 in terms of the Gross-Neveu theory.…
Fermi-liquid ground state of interacting Dirac fermions in two dimensions
Kazuhiro Seki, Yuichi Otsuka, Seiji Yunoki +1
An unbiased zero-temperature auxiliary-field quantum Monte Carlo method is employed to analyze the nature of the semimetallic phase of the two-dimensional Hubbard model on the hone…
Quantum criticality in the metal-superconductor transition of interacting Dirac fermions on a triangular lattice
Yuichi Otsuka, Kazuhiro Seki, Sandro Sorella +1
We investigate a semimetal-superconductor phase transition of two-dimensional Dirac electrons at zero temperature by large-scale and essentially unbiased quantum Monte Carlo simula…
Universal quantum criticality in the metal-insulator transition of two-dimensional interacting Dirac electrons
Yuichi Otsuka, Seiji Yunoki, Sandro Sorella
The metal-insulator transition has been a subject of intense research since Nevil Mott has first proposed that the metallic behavior of interacting electrons could turn to the insu…