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- Max Planck SocietyDE67 papers
- Centre National de la Recherche ScientifiqueFR25 papers
- Leibniz Institute for Solid State and Materials ResearchDE20 papers
- École Polytechnique Fédérale de LausanneCH15 papers
- Institute of PhysicsPL13 papers
- National Academy of Sciences of UkraineUA13 papers
- CEA Paris-SaclayFR10 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR10 papers
- Institut Laue-LangevinFR10 papers
- Helmholtz-Zentrum Berlin für Materialien und EnergieDE9 papers
- University of GöttingenDE9 papers
- Laboratoire Léon BrillouinFR8 papers
12 papers · 2 filters
Dispersion of incoherent spectral features in systems with strong electron-phonon coupling
O. Rösch, O. Gunnarsson
We study (inverse) photoemission from systems with strong coupling of doped carriers to phonons. Using an adiabatic approximation, we develop a method for calculating spectra. This…
Electron-phonon interaction in the three-band model
O. Rösch, O. Gunnarsson
We study the half-breathing phonon in the three-band model of a high temperature superconductor, allowing for vibrations of atoms and resulting changes of hopping parameters. Two d…
Apparent electron-phonon interaction in strongly correlated systems
O. Rösch, O. Gunnarsson
We study the interaction of electrons with phonons in strongly correlated solids, having high-T_c cuprates in mind. Using sum-rules, we show that the apparent strength of this inte…
Optical conductivity and the sum rule in the DDW state
D. N. Aristov, R. Zeyher
The density-wave with d-wave order parameter (DDW) is possibly realized in the underdoped regime of high-T_c cuprates. The DDW state is characterized by two branches of low-lying e…
Pseudogap at hot spots in the two-dimensional Hubbard model at weak coupling
Daniel Rohe, Walter Metzner
We analyze the interaction-induced renormalization of single-particle excitations in the two-dimensional Hubbard model at weak coupling using the Wick-ordered version of the functi…
Projective Quantum Monte Carlo Method for the Anderson Impurity Model and its Application to Dynamical Mean Field Theory
M. Feldbacher, K. Held, F. F. Assaad
We develop a projective quantum Monte Carlo algorithm of the Hirsch-Fye type for obtaining ground state properties of the Anderson impurity model. This method is employed to solve…