Many-body physics of ultracold alkaline-earth atoms with SU (N)-symmetric interactions

E Ibarra-García-Padilla… - Journal of Physics …, 2024 - iopscience.iop.org
Symmetries play a crucial role in understanding phases of matter and the transitions
between them. Theoretical investigations of quantum models with SU (N) symmetry have …

Universal thermodynamics of an Fermi-Hubbard model

E Ibarra-García-Padilla, S Dasgupta, HT Wei, S Taie… - Physical Review A, 2021 - APS
The SU (2) symmetric Fermi-Hubbard model (FHM) plays an essential role in strongly
correlated fermionic many-body systems. In the one particle per site and strongly interacting …

Antiferromagnetic Chern insulator with large charge gap in heavy transition-metal compounds

M Hafez-Torbati, GS Uhrig - Scientific Reports, 2024 - nature.com
Despite the discovery of multiple intrinsic magnetic topological insulators in recent years the
observation of Chern insulators is still restricted to very low temperatures due to the …

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 …

Metal-insulator transition and magnetism of SU (3) fermions in the square lattice

E Ibarra-García-Padilla, C Feng, G Pasqualetti… - Physical Review A, 2023 - APS
We study the SU (3) symmetric Fermi-Hubbard model (FHM) in the square lattice at 1/3-
filling using numerically exact determinant quantum Monte Carlo and numerical linked …

Topological chiral spin liquids and competing states in triangular lattice Mott insulators

XP Yao, Y Gao, G Chen - Physical Review Research, 2021 - APS
SU (N) Mott insulators have been proposed and/or realized in solid-state materials and with
ultracold atoms on optical lattices. We study the two-dimensional SU (N) antiferromagnets …

Generalized effective spin-chain formalism for strongly interacting spinor gases in optical lattices

S Basak, H Pu - Physical Review A, 2023 - APS
A generalized effective spin-chain model is developed for studies of strongly interacting
spinor gases in a one-dimensional (1D) optical lattice. The spinor gas is mapped to a system …

Hubbard model on the kagome lattice with time-reversal invariant flux and spin-orbit coupling

I Titvinidze, J Legendre, K Le Hur, W Hofstetter - Physical Review B, 2022 - APS
We study the Hubbard model with time-reversal-invariant flux and spin-orbit coupling and
position-dependent onsite energies on the kagome lattice, using numerical and analytical …

Antiferromagnetic Chern insulator in centrosymmetric systems

M Ebrahimkhas, GS Uhrig, W Hofstetter… - Physical Review B, 2022 - APS
An antiferromagnetic Chern insulator (AFCI) can exist if the effect of the time-reversal
transformation on the electronic state cannot be compensated by a space-group operation …

Antiferromagnetic topological insulators in heavy-fermion systems

M Hafez-Torbati - Physical Review B, 2024 - APS
The cooperation of electronic correlation and spin-orbit coupling can stabilize magnetic
topological insulators which host novel quantum phenomena such as the quantum …