727 citations
- H. Evertz12 · h 29
- E. Schachinger2 profiles11 · h 21
- J. P. Carbotte10 · h 43
- W. Linden2 profiles10 · h 27
- M. Aichhorn2 profiles8 · h 34
- Enrico Arrigoni2 profiles7 · h 11
- M. Daghofer7 · h 29
- M. Hohenadler7 · h 23
- E. Arrigoni2 profiles6 · h 26
- A. Lichtenstein2 profiles4 · h 61
- D. Neuber4 · h 5
- L. Chioncel4 · h 21
- McMaster UniversityCA11 papers
- University of WürzburgDE7 papers
- Centre National de la Recherche ScientifiqueFR6 papers
- Universität HamburgDE6 papers
- Canadian Institute for Advanced ResearchCA5 papers
- Computational Physics (United States)US4 papers
- Max Planck Institute for Solid State ResearchDE4 papers
- Austrian Academy of SciencesAT3 papers
- Institute of PhysicsPL3 papers
- Radboud University NijmegenNL3 papers
- Universität GreifswaldDE3 papers
- University of OradeaRO3 papers
7 papers · 1 filter
Effect of the exchange hole on the Gutzwiller approximation in one dimension
Balazs Hetenyi, Hans Gerd Evertz, Wolfgang von der Linden
The Gutzwiller approximate solution to the Gutzwiller wavefunction yields exact results for the Gutzwiller wavefunction in the infinite dimensional limit. Implicit in the Gutzwille…
Lamplighter graphs do not admit harmonic functions of finite energy
Agelos Georgakopoulos
We prove that a lamplighter graph of a locally finite graph over a finite graph does not admit a non-constant harmonic function of finite Dirichlet energy.
Characteristics of oxygen isotope substitutions in the quasiparticle spectrum of BiSrCaCuO
E. Schachinger, J. P. Carbotte, T. Timusk
There is an ongoing debate about the nature of the bosonic excitations responsible for the quasiparticle self energy in high temperature superconductors -- are they phonons or spin…
Excitation spectra of strongly correlated lattice bosons and polaritons
Peter Pippan, Hans Gerd Evertz, Martin Hohenadler
Spectral properties of the Bose-Hubbard model and a recently proposed coupled-cavity model are studied by means of quantum Monte Carlo simulations in one dimension. Both models exh…
Estimation in nonstationary random coefficient autoregressive models
Istvan Berkes, Lajos Horvath, Shiqing Ling
We investigate the estimation of parameters in the random coefficient autoregressive model. We consider a nonstationary RCA process and show that the innovation variance parameter…
Phase diagram and single-particle spectrum of CuO layers within a variational cluster approach to the 3-band Hubbard model
E. Arrigoni, M. Aichhorn, M. Daghofer +1
We carry out a detailed numerical study of the three-band Hubbard model in the underdoped region both in the hole- as well as in the electron-doped case by means of the variational…