33 citations · 69 across the 5 of their papers we have counts for
6 papers · 1 filter
Universality classes for Coulomb frustrated phase separation
C. Ortix, J. Lorenzana, C. Di Castro
We identify two "universality" classes in the Coulomb frustrated phase separation phenomenon. They correspond to two different kind of electronic compressibility anomalies often en…
Theory of antibound states in partially filled narrow band systems
G. Seibold, F. Becca, J. Lorenzana
We present a theory of the dynamical two-particle response function in the Hubbard model based on the time-dependent Gutzwiller approximation. The results are in excellent agreemen…
Quantum Lifshitz point in the infinite dimensional Hubbard model
F. Günther, G. Seibold, J. Lorenzana
We show that the Gutzwiller variational wave function is surprisingly accurate for the computation of magnetic phase boundaries in the infinite dimensional Hubbard model. This allo…
Effective electron-electron and electron-phonon interactions in the Hubbard-Holstein model
G. Aprea, C. Di Castro, M. Grilli +1
We investigate the interplay between the electron-electron and the electron-phonon interaction in the Hubbard-Holstein model. We implement the flow-equation method to investigate w…
Magnetic fluctuations from stripes in cuprates
G. Seibold, J. Lorenzana
Within the time-dependent Gutzwiller approximation for the Hubbard model we compute the magnetic fluctuations of vertical metallic stripes with parameters appropriate for La$_{1.87…
Time-dependent Gutzwiller theory of magnetic excitations in the Hubbard model
G. Seibold, F. Becca, P. Rubin +1
We use a spin-rotational invariant Gutzwiller energy functional to compute random-phase-approximation-like (RPA) fluctuations on top of the Gutzwiller approximation (GA). The metho…