139 citations · 407 across the 7 of their papers we have counts for
9 papers · 1 filter
Structural relaxation due to electronic correlations in the paramagnetic insulator KCuF3
I. Leonov, N. Binggeli, Dm. Korotin +3
A computational scheme for the investigation of complex materials with strongly interacting electrons is formulated which is able to treat atomic displacements, and hence structura…
Exact many-electron ground states on the diamond Hubbard chain
Zsolt Gulacsi, Arno Kampf, Dieter Vollhardt
Exact ground states of interacting electrons on the diamond Hubbard chain in a magnetic field are constructed which exhibit a wide range of properties such as flat-band ferromagnet…
Momentum-resolved spectral functions of SrVO calculated by LDA+DMFT
I. A. Nekrasov, K. Held, G. Keller +6
LDA+DMFT, the merger of density functional theory in the local density approximation and dynamical mean-field theory, has been mostly employed to calculate k-integrated spectra acc…
Green functions for nearest- and next-nearest-neighbor hopping on the Bethe lattice
M. Kollar, M. Eckstein, K. Byczuk +8
We calculate the local Green function for a quantum-mechanical particle with hopping between nearest and next-nearest neighbors on the Bethe lattice, where the on-site energies may…
Hopping on the Bethe lattice: Exact results for densities of states and dynamical mean-field theory
Martin Eckstein, Marcus Kollar, Krzysztof Byczuk +1
We derive an operator identity which relates tight-binding Hamiltonians with arbitrary hopping on the Bethe lattice to the Hamiltonian with nearest-neighbor hopping. This provides…
Exact Insulating and Conducting Ground States of a Periodic Anderson Model in Three Dimensions
Zsolt Gulacsi, Dieter Vollhardt
We present a class of exact ground states of a three-dimensional periodic Anderson model at 3/4 filling. Hopping and hybridization of d and f electrons extend over the unit cell of…