Diagrammatic routes to nonlocal correlations beyond dynamical mean field theory

G Rohringer, H Hafermann, A Toschi, AA Katanin… - Reviews of Modern …, 2018 - APS
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 …

Merging GW with DMFT and non-local correlations beyond

JM Tomczak, P Liu, A Toschi, G Kresse… - The European Physical …, 2017 - Springer
We review recent developments in electronic structure calculations that go beyond state-of-
the-art methods such as density functional theory (DFT) and dynamical mean field theory …

Non-perturbative many-body approach to the Hubbard model and single-particle pseudogap

YM Vilk, AMS Tremblay - Journal de Physique I, 1997 - jp1.journaldephysique.org
A new approach to the single-band Hubbard model is described in the general context of
many-body theories. It is based on enforcing conservation laws, the Pauli principle and a …

High-frequency asymptotics of the vertex function: Diagrammatic parametrization and algorithmic implementation

N Wentzell, G Li, A Tagliavini, C Taranto, G Rohringer… - Physical Review B, 2020 - APS
Vertex functions are a crucial ingredient of several forefront many-body algorithms in
condensed matter physics. However, the full treatment of their frequency and momentum …

Magnetic phase diagram of the three-dimensional doped Hubbard model

L Rampon, F Šimkovic IV, M Ferrero - Physical Review Letters, 2025 - APS
We establish the phase diagram of the Hubbard model on a cubic lattice for a wide range of
temperatures, do**s, and interaction strengths, considering both commensurate and …

Magnetic, thermodynamic, and dynamical properties of the three-dimensional fermionic Hubbard model: A comprehensive Monte Carlo study

YF Song, Y Deng, YY He - Physical Review B, 2025 - APS
The interplay between quantum and thermal fluctuations can induce rich phenomena at
finite temperatures in strongly correlated fermion systems. Here we report a numerically …

Interplay of correlations and Kohn anomalies in three dimensions: quantum criticality with a twist

T Schäfer, AA Katanin, K Held, A Toschi - Physical Review Letters, 2017 - APS
A general understanding of quantum phase transitions in strongly correlated materials is still
lacking. By exploiting a cutting-edge quantum many-body approach, the dynamical vertex …

Evaluating second-order phase transitions with diagrammatic Monte Carlo: Néel transition in the doped three-dimensional Hubbard model

C Lenihan, AJ Kim, F Šimkovic IV, E Kozik - Physical Review Letters, 2022 - APS
Diagrammatic Monte Carlo—the technique for the numerically exact summation of all
Feynman diagrams to high orders—offers a unique unbiased probe of continuous phase …

Magnetic phases near the Van Hove singularity in - and -band Hubbard models

M Fleck, AM Oleś, L Hedin - Physical Review B, 1997 - APS
We investigate the magnetic instabilities of the nondegenerate (s-band) and a degenerate (d-
band) Hubbard model in two dimensions using many-body effects due to particle-particle …

Efficient calculation of the antiferromagnetic phase diagram of the three-dimensional Hubbard model

PRC Kent, M Jarrell, TA Maier, T Pruschke - Physical Review B—Condensed …, 2005 - APS
The dynamical cluster approximation (DCA) with Betts clusters is used to calculate the
antiferromagnetic phase diagram of the three-dimensional Hubbard model at half-filling …