20 citations · 20 across the 1 of their papers we have counts for
3 papers
Fictive Impurity Approach to Dynamical Mean Field Theory: a Strong-Coupling Investigation
Andreas Fuhrmann, Satoshi Okamoto, Hartmut Monien +1
Quantum Monte Carlo and semiclassical methods are used to solve two and four site cluster dynamical mean field approximations to the square lattice Hubbard model at half filling an…
From Mott Insulator to Band Insulator: A DMFT Study
Andreas Fuhrmann, David Heilmann, Hartmut Monien
The question if a Mott insulator and a band insulator are fundamentally different has been the matter of intensive research recently. Here we consider a simple model which allows b…
Benchmarking a semiclassical impurity solver for dynamical-mean-field theory: self-energies and magnetic transitions of the single-orbital Hubbard model
Satoshi Okamoto, Andreas Fuhrmann, Armin Comanac +1
An investigation is presented of the utility of semiclassical approximations for solving the quantum-impurity problems arising in the dynamical-mean-field approach to the correlate…