Flavor-wave theory with quasiparticle dam** at finite temperatures: Application to chiral edge modes in the Kitaev model

S Koyama, J Nasu - Physical Review B, 2023 - APS
We propose a theoretical framework to investigate elementary excitations at finite
temperatures within a localized electron model that describes the interactions between …

Hybrid spin-orbit exciton-magnon excitations in FePS3

R Dhakal, S Griffith, SM Winter - npj Quantum Materials, 2024 - nature.com
FePS3 is a layered van der Waals (vdW) Ising antiferromagnet that has recently been
studied in the context of true 2D magnetism and emerged as an ideal material platform for …

Solving correlation clustering with QAOA and a Rydberg qudit system: a full-stack approach

JR Weggemans, A Urech, A Rausch, R Spreeuw… - Quantum, 2022 - quantum-journal.org
We study the correlation clustering problem using the quantum approximate optimization
algorithm (QAOA) and qudits, which constitute a natural platform for such non-binary …

The ALF (Algorithms for Lattice Fermions) project release 2.0. Documentation for the auxiliary-field quantum Monte Carlo code

FF Assaad, M Bercx, F Goth, A Götz… - SciPost Physics …, 2022 - scipost.org
Abstract The Algorithms for Lattice Fermions package provides a general code for the finite-
temperature and projective auxiliary-field quantum Monte Carlo algorithm. The code is …

The nature of correlations in the insulating states of twisted bilayer graphene

JM Pizarro, MJ Calderón… - Journal of Physics …, 2019 - iopscience.iop.org
The recently observed superconductivity in twisted bilayer graphene emerges from
insulating states believed to arise from electronic correlations. While there have been many …

Zooming in on heavy fermions in Kondo lattice models

B Danu, Z Liu, FF Assaad, M Raczkowski - Physical Review B, 2021 - APS
Resolving the heavy fermion band in the conduction electron momentum resolved spectral
function of the Kondo lattice model is challenging since, in the weak coupling limit, its …

Density matrix renormalization group simulations of SU() Heisenberg chains using standard Young tableaus: Fundamental representation and comparison with a …

P Nataf, F Mila - Physical Review B, 2018 - APS
We develop an efficient method to perform density matrix renormalization group simulations
of the SU (N) Heisenberg chain with open boundary conditions taking full advantage of the …

SU (4)-symmetric spin-orbital liquids on the hyperhoneycomb lattice

WMH Natori, EC Andrade, RG Pereira - Physical Review B, 2018 - APS
We study the effective spin-orbital model that describes the magnetism of 4 d 1 or 5 d 1 Mott
insulators in ideal tricoordinated lattices. In the limit of vanishing Hund's coupling, the model …

Intertwining SU() symmetry and frustration on a honeycomb lattice

XP Yao, RL Luo, G Chen - Physical Review B, 2022 - APS
Large symmetry groups in quantum many-body systems could strongly enhance quantum
fluctuations and thereby stabilize exotic quantum phases. Frustrated interactions were long …

Mott transition in the -flux Hubbard model on a square lattice

Z Zhou, C Wu, Y Wang - Physical Review B, 2018 - APS
With increasing repulsive interaction, we show that a Mott transition occurs from the
semimetal to the valence bond solid, accompanied by the Z 4 discrete symmetry breaking …