Compass models: Theory and physical motivations
Compass models are theories of matter in which the couplings between the internal spin (or
other relevant field) components are inherently spatially (typically, direction) dependent. A …
other relevant field) components are inherently spatially (typically, direction) dependent. A …
Nature of the Spin-Liquid Ground State of the Heisenberg Model on the Kagome Lattice
We perform a density-matrix renormalization group (DMRG) study of the S= 1 2 Heisenberg
antiferromagnet on the kagome lattice to identify the conjectured spin liquid ground state …
antiferromagnet on the kagome lattice to identify the conjectured spin liquid ground state …
Challenges in design of Kitaev materials: Magnetic interactions from competing energy scales
In this study, we reanalyze the magnetic interactions in the Kitaev spin-liquid candidate
materials Na 2 IrO 3, α-RuCl 3, and α-Li 2 IrO 3 using nonperturbative exact diagonalization …
materials Na 2 IrO 3, α-RuCl 3, and α-Li 2 IrO 3 using nonperturbative exact diagonalization …
Sufficient condition for absence of the sign problem in the fermionic quantum Monte Carlo algorithm
Quantum Monte Carlo (QMC) simulations involving fermions have a notorious sign problem.
Some well-known exceptions to the auxiliary field QMC algorithm rely on the factorizibility of …
Some well-known exceptions to the auxiliary field QMC algorithm rely on the factorizibility of …
kagome Heisenberg antiferromagnet revisited
AM Läuchli, J Sudan, R Moessner - Physical Review B, 2019 - APS
We examine the perennial quantum spin liquid candidate S= 1 2 Heisenberg
antiferromagnet on the kagome lattice. Our paper is based on achieving Lanczos …
antiferromagnet on the kagome lattice. Our paper is based on achieving Lanczos …
Imaging quantum interference in a monolayer Kitaev quantum spin liquid candidate
Y Kohsaka, S Akutagawa, S Omachi, Y Iwamichi, T Ono… - Physical Review X, 2024 - APS
Single atomic defects are prominent windows to look into host quantum states because
collective responses from the host states emerge as localized states around the defects …
collective responses from the host states emerge as localized states around the defects …
Majorana positivity and the fermion sign problem of quantum Monte Carlo simulations
The sign problem is a major obstacle in quantum Monte Carlo simulations for many-body
fermion systems. We examine this problem with a new perspective based on the Majorana …
fermion systems. We examine this problem with a new perspective based on the Majorana …
Effective theory of magnetization plateaux in the Shastry-Sutherland lattice
A Abendschein, S Capponi - Physical review letters, 2008 - APS
We use the nonperturbative Contractor-Renormalization method (CORE) in order to derive
an effective model for triplet excitations on the Shastry-Sutherland lattice. For strong enough …
an effective model for triplet excitations on the Shastry-Sutherland lattice. For strong enough …
Chiral Mott insulator with staggered loop currents in the fully frustrated Bose-Hubbard model
Motivated by experiments on Josephson junction arrays in a magnetic field and ultracold
interacting atoms in an optical lattice in the presence of a “synthetic” orbital magnetic field …
interacting atoms in an optical lattice in the presence of a “synthetic” orbital magnetic field …
Ground-state energy and spin gap of spin- Kagomé-Heisenberg antiferromagnetic clusters: Large-scale exact diagonalization results
We present a comprehensive list of the ground-state energies and the spin gaps of finite
Kagomé clusters with up to 42 spins obtained using large-scale exact diagonalization …
Kagomé clusters with up to 42 spins obtained using large-scale exact diagonalization …