3 papers
cond-mat.str-el2025
Self-consistent dynamical Hubbard functional for correlated solids
Tommaso Chiarotti, Matteo Quinzi, Andrea Pintus +3
Many-body functionals of the Green's function can provide fundamental advances in electronic-structure calculations, due to their ability to accurately predict both spectral and th…
cond-mat.mtrl-sci2025
Functional theory of the occupied spectral density
Andrea Ferretti, Nicola Marzari
We address the problem of interacting electrons in an external potential by introducing the occupied spectral density as fundamental variable. First, we formulate…
cond-mat.str-el2024
Broken symmetry solutions in one-dimensional lattice models via many-body perturbation theory
Matteo Quinzi, Tommaso Chiarotti, Marco Gibertini +1
In this work we study self-consistent solutions in one-dimensional lattice models obtained via many-body perturbation theory. The Dyson equation is solved in a fully self-consisten…