Ultrafast optical spectroscopy of strongly correlated materials and high-temperature superconductors: a non-equilibrium approach
In the last two decades non-equilibrium spectroscopies have evolved from avant-garde
studies to crucial tools for expanding our understanding of the physics of strongly correlated …
studies to crucial tools for expanding our understanding of the physics of strongly correlated …
Colloquium: Modeling the unconventional superconducting properties of expanded fullerides
The trivalent alkali fulleride solids of generic composition A 3 C 60, where C 60 is the
fullerene molecule and A= K, Rb, and Cs, are a well-established family of molecular …
fullerene molecule and A= K, Rb, and Cs, are a well-established family of molecular …
Local electronic correlation at the two-particle level
Electronic-correlated systems are often well described by dynamical mean field theory
(DMFT). While DMFT studies have mainly focused hitherto on one-particle properties …
(DMFT). While DMFT studies have mainly focused hitherto on one-particle properties …
Fate of the false Mott-Hubbard transition in two dimensions
We have studied the impact of nonlocal electronic correlations at all length scales on the
Mott-Hubbard metal-insulator transition in the unfrustrated two-dimensional Hubbard model …
Mott-Hubbard metal-insulator transition in the unfrustrated two-dimensional Hubbard model …
Mechanism for fluctuating pair density wave
In weakly coupled BCS superconductors, only electrons within a tiny energy window around
the Fermi energy, EF, form Cooper pairs. This may not be the case in strong coupling …
the Fermi energy, EF, form Cooper pairs. This may not be the case in strong coupling …
Fluctuation diagnostics of the electron self-energy: Origin of the pseudogap physics
We demonstrate how to identify which physical processes dominate the low-energy spectral
functions of correlated electron systems. We obtain an unambiguous classification through …
functions of correlated electron systems. We obtain an unambiguous classification through …
Divergent precursors of the Mott-Hubbard transition at the two-particle level
Identifying the fingerprints of the Mott-Hubbard metal-insulator transition may be quite
elusive in correlated metallic systems if the analysis is limited to the single particle level …
elusive in correlated metallic systems if the analysis is limited to the single particle level …
Two-dimensional attractive Hubbard model and the BCS-BEC crossover
Recent experiments with ultracold fermionic atoms in optical lattices have provided a
tuneable and clean realization of the attractive Hubbard model (AHM). In view of this …
tuneable and clean realization of the attractive Hubbard model (AHM). In view of this …
Impact of nonlocal correlations over different energy scales: A dynamical vertex approximation study
In this paper, we investigate how nonlocal correlations affect, selectively, the physics of
correlated electrons over different energy scales, from the Fermi level to the band edges …
correlated electrons over different energy scales, from the Fermi level to the band edges …
Antiferromagnetic and -wave pairing correlations in the strongly interacting two-dimensional Hubbard model from the functional renormalization group
D Vilardi, C Taranto, W Metzner - Physical Review B, 2019 - APS
Using the dynamical mean-field theory (DMFT) as a “booster rocket”, the functional
renormalization group (fRG) can be upgraded from a weak-coupling method to a powerful …
renormalization group (fRG) can be upgraded from a weak-coupling method to a powerful …