Quantitative description of long-range order in the XXZ antiferromagnet on the square lattice

N Caci, DB Hering, MR Walther, KP Schmidt, S Wessel… - Physical Review B, 2024 - APS
The quantitative description of long-range order remains a challenge in quantum many-body
physics. We provide zero-temperature results from two complementary methods for the …

Dualities between 2+ 1d fusion surface models from braided fusion categories

L Eck - arxiv preprint arxiv:2501.14722, 2025 - arxiv.org
Fusion surface models generalize the concept of anyon chains to 2+ 1 dimensions, utilizing
fusion 2-categories as their input. We investigate bond-algebraic dualities in these systems …

Effect of Spin Fluctuation on a Frustrated Two-Dimensional Ising Antiferromagnet in Magnetic Fields

TH Pham - Journal of Superconductivity and Novel Magnetism, 2025 - Springer
Abstract The\({J} _ {1}-{J} _ {2}\) frustrated two-dimensional Ising antiferromagnet in the
magnetic fields on the square lattice is studied using a functional integral method. First, we …