74 citations · 177 across the 4 of their papers we have counts for
4 papers
Tunneling singularities in the open Hubbard chain
Holger Frahm, Gerald Bedürftig
We study singularities in the I-V characteristics for sequential tunneling from resonant localized levels (e.g. a quantum dot) into a one dimensional electron system described by a…
Friedel Oscillations in the Open Hubbard Chain
G. Bedürftig, B. Brendel, H. Frahm +1
Using the Density Matrix Renormalization Group (DMRG), we calculate critical exponents for the one-dimensional Hubbard model with open boundary conditions with and without addition…
Integrable impurity in the supersymmetric t-J model
Gerald Bedürftig, Fabian H. L. Eßler, Holger Frahm
An impurity coupling to both spin and charge degrees of freedom is added to a periodic t-J chain such that its interaction with the bulk can be varied continuously without losing i…
Thermodynamics of an integrable model for electrons with correlated hopping
Gerald Bedürftig, Holger Frahm
A new supersymmetric model for electrons with generalized hopping terms and Hubbard interaction on a one-dimensional lattice is solved by means of the Bethe Ansatz. We investigate…