103 citations · 374 across the 18 of their papers we have counts for
18 papers
Study on the validity of IPT+parquet method as an impurity solver in DMFT focusing on orbital fluctuations
Aira Yamada, Ryota Mizuno, Masayuki Ochi +2
A breakdown of calculations with exact impurity solvers in the dynamical mean field theory in multiband systems easily occurs due to the expensive numerical cost. To overcome this…
Mott transition in the Hubbard model on the anisotropic kagomé lattice
Yuta Furukawa, Takuma Ohashi, Yohta Koyama +1
We investigate the Mott transition in the anisotropic kagomé lattice Hubbard model using the cellular dynamical mean field theory combined with continuous-time quantum Monte Carlo…
Quantum condensation in electron-hole bilayers with density imbalance
Kazuo Yamashita, Kenichi Asano, Takuma Ohashi
We study the two-dimensional spatially separated electron-hole system with density imbalance at absolute zero temperature. By means of the mean-field theory, we find that the Fulde…
Spatial fluctuations of spin and orbital in two-orbital Hubbard model
Tomoko Kita, Takuma Ohashi, Sei-ichiro Suga
We investigate the quasiparticle dynamics in the two-orbital Hubbard model on the square lattice at quarter filling by means of the cellular dynamical mean field theory. We show th…
Finite-Temperature Mott Transition in Two-Dimensional Frustrated Hubbard Models
Takuma Ohashi, Tsutomu Momoi, Hirokazu Tsunetsugu +1
We investigate the Hubbard model on two typical frustrated lattices in two dimensions, the kagome lattice and the anisotropic triangular lattice, by means of the cellular dynamical…
Three-orbital Kondo effect in single quantum dot system with plural electrons
Tomoko Kita, Rui Sakano, Takuma Ohashi +1
We study the Kondo effect and related transport properties in orbitally degenerate vertical quantum dot systems with plural electrons. Applying the non-crossing approximation to th…