Revealing fermionic quantum criticality from new Monte Carlo techniques

XY Xu, ZH Liu, G Pan, Y Qi, K Sun… - Journal of Physics …, 2019 - iopscience.iop.org
This review summarizes recent developments in the study of fermionic quantum criticality,
focusing on new progress in numerical methodologies, especially quantum Monte Carlo …

Quantum phase transitions in Dirac fermion systems

R Boyack, H Yerzhakov, J Maciejko - The European Physical Journal …, 2021 - Springer
A key problem in the field of quantum criticality is to understand the nature of quantum phase
transitions in systems of interacting itinerant fermions, motivated by experiments on a variety …

Metal-insulator transition and quantum magnetism in the SU (3) Fermi-Hubbard model

C Feng, E Ibarra-García-Padilla, KRA Hazzard… - Physical Review …, 2023 - APS
We develop a self-consistent variant of the constrained path quantum Monte Carlo approach
which ensures its independence of the trial wave function, and apply the method to compute …

Antiferromagnetism induced by bond Su-Schrieffer-Heeger electron-phonon coupling: A quantum Monte Carlo study

X Cai, ZX Li, H Yao - Physical review letters, 2021 - APS
Antiferromagnetism (AFM) such as Néel ordering is often closely related to Coulomb
interactions such as Hubbard repulsion in two-dimensional (2D) systems. Whether Néel …

Phase diagram of the Su-Schrieffer-Heeger-Hubbard model on a square lattice

C Feng, B Xing, D Poletti, R Scalettar, G Batrouni - Physical Review B, 2022 - APS
The Hubbard and Su-Schrieffer-Heeger (SSH) Hamiltonians are iconic models for
understanding the qualitative effects of electron-electron and electron-phonon interactions …

Quantum monte carlo simulations of the 2d su-schrieffer-heeger model

B Xing, WT Chiu, D Poletti, RT Scalettar, G Batrouni - Physical Review Letters, 2021 - APS
Over the past several years, a new generation of quantum simulations has greatly expanded
our understanding of charge density wave phase transitions in Hamiltonians with coupling …

Valence-bond solid to antiferromagnet transition in the two-dimensional Su-Schrieffer-Heeger model by Langevin dynamics

A Götz, S Beyl, M Hohenadler, FF Assaad - Physical Review B, 2022 - APS
The two-dimensional Su-Schrieffer-Heeger model of electrons coupled to quantum phonons
is investigated using Langevin dynamics within the framework of auxiliary-field quantum …

Attractive Su-Schrieffer-Heeger-Hubbard model on a square lattice away from half-filling

B Xing, C Feng, R Scalettar, GG Batrouni, D Poletti - Physical Review B, 2023 - APS
The Su-Schrieffer-Heeger (SSH) model, with bond phonons modulating electron tunneling,
is a paradigmatic electron-phonon model that hosts an antiferromagnetic order to bond …

Charge order in the Holstein model on a honeycomb lattice

YX Zhang, WT Chiu, NC Costa, GG Batrouni… - Physical Review Letters, 2019 - APS
The effect of electron-electron interactions on Dirac fermions, and the possibility of an
intervening spin-liquid phase between the semimetal and antiferromagnetic (AF) regimes …

Phase diagram of the two-dimensional Hubbard-Holstein model

NC Costa, K Seki, S Yunoki, S Sorella - Communications Physics, 2020 - nature.com
The electron–electron and electron–phonon interactions play an important role in correlated
materials, being key features for spin, charge and pair correlations. Thus, here we …