Benchmarking variational quantum eigensolvers for the square-octagon-lattice Kitaev model

ACY Li, MS Alam, T Iadecola, A Jahin, J Job… - Physical Review …, 2023 - APS
Quantum spin systems may offer the first opportunities for beyond-classical quantum
computations of scientific interest. While general quantum simulation algorithms likely …

Dimensional reduction of Kitaev spin liquid at quantum criticality

S Feng, A Agarwala, N Trivedi - Physical Review Research, 2024 - APS
We investigate the fate of the Kitaev spin liquid (KSL) under the influence of an external
magnetic field h in the [001] direction and upon tuning bond anisotropy of the Kitaev …

Local spin-flip transitions induced by magnetic quantum impurities in two-dimensional magnets

T Bauer, LRD Freitas, EC Andrade, R Egger… - Physical Review B, 2024 - APS
We predict a general local spin-flip transition mechanism caused by magnetic quantum
impurities in (partially) polarized phases of quantum magnets in the absence of conservation …

Field tuning Kitaev systems for spin fractionalization and topological order

J Das, S Kundu, A Kumar… - Journal of Physics …, 2024 - iopscience.iop.org
The honeycomb Kitaev model describes a Z 2 spin liquid with topological order and
fractionalized excitations consisting of gapped π-fluxes and free Majorana fermions …

Thermodynamics of the spin- Heisenberg antiferromagnet on the star lattice

A Reingruber, N Caci, S Wessel, J Richter - Physical Review B, 2024 - APS
Using a combination of quantum Monte Carlo simulations in adapted cluster bases, the finite-
temperature Lanczos method, and an effective Hamiltonian approach, we explore the …

Thermally enhanced Majorana-mediated spin transport in the Kitaev model

H Taguchi, Y Murakami, A Koga - Physical Review B, 2022 - APS
We study how stable the Majorana-mediated spin transport in a quantum spin Kitaev model
is against thermal fluctuations. Using the time-dependent thermal pure quantum state …

Ground states and dynamical properties of the quantum Heisenberg model on the 1/5-depleted square lattice

JH Huang, Z Liu, HQ Wu, DX Yao - Physical Review B, 2022 - APS
We study the S> 1/2 antiferromagnetic Heisenberg model on the 1/5-depleted square lattice
as a function of the ratio of the intraplaquette coupling to the interplaquette coupling. Using …

Symmetry analysis of tensors in the honeycomb lattice of edge-sharing octahedra

FG Utermohlen, N Trivedi - Physical Review B, 2021 - APS
We obtain the most general forms of rank-2 and rank-3 tensors allowed by the crystal
symmetries of the honeycomb lattice of edge-sharing octahedra for crystals belonging to …

Spin-S Decorated Honeycomb Kitaev Model with S ≥ 1

T Mizoguchi - Journal of the Physical Society of Japan, 2024 - journals.jps.jp
In the prior work [J. Phys. Soc. Jpn. 91, 124709 (2022)], we have introduced the spin-half
decorated honeycomb Kitaev model, and have elucidated its exactly-solvable nature at any …

Kitaev honeycomb antiferromagnet in a field: quantum phase diagram for general spin

SS Jahromi, M Hörmann, P Adelhardt, S Fey… - Communications …, 2024 - nature.com
We use tensor-network methods and high-order linked-cluster expansions to explore the
quantum phase diagram of the antiferromagnetic Kitaev honeycomb model in a magnetic …