Diagrammatic routes to nonlocal correlations beyond dynamical mean field theory
Strong electronic correlations pose one of the biggest challenges to solid state theory.
Recently developed methods that address this problem by starting with the local, eminently …
Recently developed methods that address this problem by starting with the local, eminently …
Solutions of the two-dimensional Hubbard model: benchmarks and results from a wide range of numerical algorithms
Numerical results for ground-state and excited-state properties (energies, double
occupancies, and Matsubara-axis self-energies) of the single-orbital Hubbard model on a …
occupancies, and Matsubara-axis self-energies) of the single-orbital Hubbard model on a …
Dynamical screening in correlated electron systems—from lattice models to realistic materials
Recent progress in treating the dynamical nature of the screened Coulomb interaction in
strongly correlated lattice models and materials is reviewed with a focus on computational …
strongly correlated lattice models and materials is reviewed with a focus on computational …
Connections and performances of Green's function methods for charged and neutral excitations
In recent years, Green's function methods have garnered considerable interest due to their
ability to target both charged and neutral excitations. Among them, the well-established GW …
ability to target both charged and neutral excitations. Among them, the well-established GW …
Finite temperature quantum embedding theories for correlated systems
The cost of the exact solution of the many-electron problem is believed to be exponential in
the number of degrees of freedom, necessitating approximations that are controlled and …
the number of degrees of freedom, necessitating approximations that are controlled and …
Nonlocal corrections to dynamical mean-field theory from the two-particle self-consistent method
Theoretical methods that are accurate for both short-distance observables and long-
wavelength collective modes are still being developed for the Hubbard model. Here, we …
wavelength collective modes are still being developed for the Hubbard model. Here, we …
Mott physics and spin fluctuations: A functional viewpoint
T Ayral, O Parcollet - Physical Review B, 2016 - APS
We present a formalism for strongly correlated systems with fermions coupled to bosonic
modes. We construct the three-particle irreducible functional K by successive Legendre …
modes. We construct the three-particle irreducible functional K by successive Legendre …
Consistent partial bosonization of the extended Hubbard model
We design an efficient and balanced approach that captures major effects of collective
electronic fluctuations in strongly correlated fermionic systems using a simple diagrammatic …
electronic fluctuations in strongly correlated fermionic systems using a simple diagrammatic …
Renormalized singles green's function in the T-matrix approximation for accurate quasiparticle energy calculation
We combine the renormalized singles (RS) Green's function with the T-matrix approximation
for the single-particle Green's function to compute quasiparticle energies for valence and …
for the single-particle Green's function to compute quasiparticle energies for valence and …
Quantum Monte Carlo for correlated out-of-equilibrium nanoelectronic devices
We present a simple, general purpose, quantum Monte Carlo algorithm for out-of-
equilibrium interacting nanoelectronic systems. It allows one to systematically compute the …
equilibrium interacting nanoelectronic systems. It allows one to systematically compute the …