95 citations · 731 across the 29 of their papers we have counts for
10 papers · 1 filter
The charge density fluctuations and the Shrinking Fermi Liquid scenario for strange metallicity in cuprates
Sergio Caprara, Sauri Bhattacharyya, Carlo Di Castro +3
We interpret the strange metal (SM) properties of slightly overdoped cuprates in terms of the recently proposed Shrinking Fermi Liquid theory. This is based on the pervading presen…
Exact response functions within the time-dependent Gutzwiller approach
J. Bünemann, S. Wasner, E. v. Oelsen +1
We investigate the applicability of the two existing versions of a time-dependent Gutzwiller approximation (TDGA) beyond the frequently used limit of infinite spatial dimensions. T…
Linear-Response Dynamics from the Time-Dependent Gutzwiller Approximation
J. Bünemann, M. Capone, J. Lorenzana +1
Within a Lagrangian formalism we derive the time-dependent Gutzwiller approximation for general multi-band Hubbard models. Our approach explicitly incorporates the coupling between…
Influence of correlations on transitive electron-phonon couplings in cuprate superconductors
G. Seibold, M. Grilli, J. Lorenzana
We investigate a model for the CuO_2 plane of high-T_c superconductors where the charge carriers are coupled to A_{1g} and B_{1g} symmetric out-of plane vibrations of the oxygen at…
Phonon renormalization from local and transitive electron-lattice couplings in strongly correlated systems
E. von Oelsen, A. Di Ciolo, J. Lorenzana +2
Within the time-dependent Gutzwiller approximation (TDGA) applied to Holstein- and SSH-Hubbard models we study the influence of electron correlations on the phonon self-energy. For…
Diagonal stripes in the spin glass phase of cuprates
G. Seibold, J. Lorenzana
Based on the unrestricted Gutzwiller approximation we study the possibility that the diagonal incommensurate spin scattering in the spin glass phase of lanthanum cuprates originate…
Fermi surface dichotomy on systems with fluctuating order
M. Grilli, G. Seibold, A. Di Ciolo +1
We investigate the effect of a dynamical collective mode coupled with quasiparticles at specific wavevectors only. This coupling describes the incipient tendency to order and produ…
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…
Time-dependent Gutzwiller approximation for the Hubbard model
G. Seibold, J. Lorenzana
We develop a time-dependent Gutzwiller approximation (GA) for the Hubbard model analogous to the time-dependent Hartree-Fock (HF) method. The formalism incorporates ground state co…
Unrestricted slave-boson mean-field approximation for the two-dimensional Hubbard model
G. Seibold, E. Sigmund, V. Hizhnyakov
The Kotliar-Ruckenstein slave-boson scheme is used to allow for an unrestricted variation of the bosonic and fermionic fields on the saddle-point level. Various inhomogeneous solut…