68 citations · 68 across the 1 of their papers we have counts for
8 papers · 1 filter
The Kondo Lattice Model in Infinite Dimensions II. Static Susceptibilities and Phase Diagram
Junya Otsuki, Hiroaki Kusunose, Yoshio Kuramoto
Magnetic and charge susceptibilities in the Kondo lattice are derived by the continuous-time quantum Monte Carlo (CT-QMC) method combined with the dynamical mean-field theory. For…
Evolution of a Large Fermi Surface in the Kondo Lattice
Junya Otsuki, Hiroaki Kusunose, Yoshio Kuramoto
Single-particle spectrum of the Kondo lattice model is derived with use of the continuous-time quantum Monte Carlo method, combined with the dynamical mean-field theory. Crossover…
The Kondo Lattice Model in Infinite Dimensions I. Formalism
Junya Otsuki, Hiroaki Kusunose, Yoshio Kuramoto
A Green-function formalism for the Kondo lattice model is presented, which is designed to be combined with the dynamical mean-field theory. With use of Wick's theorem only for cond…
Continuous-Time Quantum Monte Carlo Method for the Coqblin-Schrieffer Model
J. Otsuki, H. Kusunose, P. Werner +1
An impurity solver based on a continuous-time quantum Monte Carlo method is developed for the Coqblin-Schrieffer model. The Monte Carlo simulation does not encounter a sign problem…
Excitonic Bound State in the Extended Anderson Model with c-f Coulomb Interaction
Junya Otsuki
The Anderson model with the Coulomb interaction between the local and conduction electrons is studied in the semiconducting phase. Based on a perturbation theory from the atomic li…
Extension of the Non-Crossing Approximation for the Anderson Model with Finite Coulomb Repulsion
J. Otsuki, Y. Kuramoto
The non-crossing approximation (NCA) is generalized for the Anderson model with finite Coulomb repulsion U. Resummation of infinite number of terms is performed so as to incorporat…