Sachdev-Ye-Kitaev models and beyond: Window into non-Fermi liquids

D Chowdhury, A Georges, O Parcollet… - Reviews of Modern Physics, 2022 - APS
This is a review of the Sachdev-Ye-Kitaev (SYK) model of compressible quantum many-
body systems without quasiparticle excitations, and its connections to various theoretical …

The Hubbard model: A computational perspective

M Qin, T Schäfer, S Andergassen… - Annual Review of …, 2022 - annualreviews.org
The Hubbard model is the simplest model of interacting fermions on a lattice and is of similar
importance to correlated electron physics as the Ising model is to statistical mechanics or the …

Flavour Hund's coupling, Chern gaps and charge diffusivity in moiré graphene

JM Park, Y Cao, K Watanabe, T Taniguchi… - Nature, 2021 - nature.com
Interaction-driven spontaneous symmetry breaking lies at the heart of many quantum
phases of matter. In moiré systems, broken spin/valley 'flavour'symmetry in flat bands …

Model for the metal-insulator transition in graphene superlattices and beyond

NFQ Yuan, L Fu - Physical Review B, 2018 - APS
We propose a two-orbital Hubbard model on an emergent honeycomb lattice to describe the
low-energy physics of twisted bilayer graphene. Our model provides a theoretical basis for …

Bad metallic transport in a cold atom Fermi-Hubbard system

PT Brown, D Mitra, E Guardado-Sanchez, R Nourafkan… - Science, 2019 - science.org
Strong interactions in many-body quantum systems complicate the interpretation of charge
transport in such materials. To shed light on this problem, we study transport in a clean …

Strange metallicity in the doped Hubbard model

EW Huang, R Sheppard, B Moritz, TP Devereaux - Science, 2019 - science.org
Strange or bad metallic transport, defined by incompatibility with the conventional
quasiparticle picture, is a theme common to many strongly correlated materials, including …

Dynamical mean-field theory of moiré bilayer transition metal dichalcogenides: Phase diagram, resistivity, and quantum criticality

J Zang, J Wang, J Cano, A Georges, AJ Millis - Physical Review X, 2022 - APS
We present a comprehensive dynamical mean field study of the triangular lattice moiré
Hubbard model, which is believed to represent the physics of moiré bilayer transition metal …

Non-Fermi liquid phase and linear-in-temperature scattering rate in overdoped two-dimensional Hubbard model

W Wú, X Wang, AM Tremblay - Proceedings of the National Academy of …, 2022 - pnas.org
Understanding electronic properties that violate the Landau Fermi liquid paradigm in
cuprate superconductors remains a major challenge in condensed-matter physics. The …

Linear resistivity and Sachdev-Ye-Kitaev (SYK) spin liquid behavior in a quantum critical metal with spin-1/2 fermions

P Cha, N Wentzell, O Parcollet, A Georges… - Proceedings of the …, 2020 - pnas.org
“Strange metals” with resistivity depending linearly on temperature T down to low T have
been a long-standing puzzle in condensed matter physics. Here, we consider a lattice model …

Anomalous enhancement of the Nernst effect at the crossover between a Fermi liquid and a strange metal

Y Yang, Q Tao, Y Fang, G Tang, C Yao, X Yan… - Nature Physics, 2023 - nature.com
A strange-metal state appears in many strongly correlated materials, so understanding its
nature is a crucial problem in condensed matter physics. This knowledge could provide …