103 citations · 570 across the 32 of their papers we have counts for
4 papers · 1 filter
Superconductivity in the repulsive Hubbard model on different geometries induced by density-assisted hopping
Franco T. Lisandrini, Edmond Orignac, Roberta Citro +2
We study the effect of density-assisted hopping on different dimerized lattice geometries, such as bilayers and ladder structures. We show analytically that the density-assisted ho…
Numerical evaluation of two-time correlation functions in open quantum systems with matrix product state methods: a comparison
Stefan Wolff, Ameneh Sheikhan, Corinna Kollath
We compare the efficiency of different matrix product state (MPS) based methods for the calculation of two-time correlation functions in open quantum systems. The methods are the p…
Evolution of two-time correlations in dissipative quantum spin systems: aging and hierarchical dynamics
Stefan Wolff, Jean-Sebastien Bernier, Dario Poletti +2
We consider the evolution of two-time correlations in the quantum XXZ spin-chain in contact with an environment causing dephasing. Extending quasi-exact time-dependent matrix produ…
Fermi edge singularity and finite frequency spectral features in a semi-infinite 1D wire
A. Sheikhan, I. Snyman
We theoretically study a charge qubit interacting with electrons in a semi-infinite 1D wire. The system displays the physics of the Fermi edge singularity. Our results generalize k…