51 citations · 86 across the 3 of their papers we have counts for
5 papers · 1 filter
Electronic structure of strongly correlated d-wave superconductors
Bernhard Edegger, V. N. Muthukumar, Claudius Gros +1
We study the electronic structure of a strongly correlated d-wave superconducting state. Combining a renormalized mean field theory with direct calculation of matrix elements, we o…
Creation and destruction of a spin gap in weakly coupled quarter-filled ladders
B. Edegger, H. G. Evertz, R. M. Noack
We investigate weakly coupled quarter-filled ladders with model parameters relevant for NaV_2O_5 using density-matrix renormalization group calculations on an extended Hubbard mode…
Particle number renormalization in almost half filled Mott Hubbard superconductors
Bernhard Edegger, Noboru Fukushima, Claudius Gros +1
The effects of the Gutzwiller projection on a BCS wave function with varying particle number are considered. We show that a fugacity factor has to be introduced in these wave funct…
Charge order induced by electron-lattice interaction in NaV2O5
B. Edegger, H. G. Evertz, R. M. Noack
We present Density Matrix Renormalization Group calculations of the ground-state properties of quarter-filled ladders including static electron-lattice coupling. Isolated ladders a…
On the evaluation of matrix elements in partially projected wave functions
N. Fukushima, B. Edegger, V. N. Muthukumar +1
We generalize the Gutzwiller approximation scheme to the calculation of nontrivial matrix elements between the ground state and excited states. In our scheme, the normalization of…