727 citations
- McMaster UniversityCA8 papers
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- Universität GreifswaldDE3 papers
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9 papers · 1 filter
On the Relation between Optical Conductivity and Quasiparticle Dynamics: Boson Structures
J. P. Carbotte, E. Schachinger, J. Hwang
An extended Drude form is often used to analyze optical data in terms of an optical scattering rate and renormalized mass corresponding, respectively, to the real and imaginary par…
Photoemission spectra of many-polaron systems
M. Hohenadler, D. Neuber, W. von der Linden +3
The cross over from low to high carrier densities in a many-polaron system is studied in the framework of the one-dimensional spinless Holstein model, using unbiased numerical meth…
Temperature- and quantum phonon effects on Holstein-Hubbard bipolarons
Martin Hohenadler, Wolfgang von der Linden
The one-dimensional Holstein-Hubbard model with two electrons of opposite spin is studied using an extension of a recently developed quantum Monte Carlo method, and a very simple y…
Finite-temperature investigation of quarter filled ladder systems
C. Gabriel, E. Sherman, T. C. Lang +2
We investigate charge ordering in a quarter-filled ladder at finite temperature by determinantal Quantum Monte Carlo. The sign problem is moderate in a wide range of model paramete…
Single particle spectrum of the flux phase in the FM Kondo Model
M. Daghofer, W. Koller, W. von der Linden +1
We investigate the 2D ferromagnetic Kondo lattice model for manganites with classical corespins at Hund's rule coupling J_H=6, with antiferromagnetic superexchange 0.03 < J' < 0.05…
Optical conductivity in non-equilibrium d-wave superconductors
J. P. Carbotte, E. Schachinger
We consider the optical conductivity of a d-wave BCS superconductor in the presence of a non-equilibrium distribution of excess quasiparticles. Two different simplified models used…