Jordan-Wigner Approach to Dynamic Correlations in 2D Spin-1/2 Models

TL;DR

This paper applies the Jordan-Wigner fermionization method to analyze the dynamic properties of the 2D spin-1/2 XY model, providing insights relevant for interpreting neutron scattering experiments in frustrated quantum magnets.

Contribution

It introduces a two-dimensional Jordan-Wigner fermionization approach to study dynamic correlations in 2D spin models, linking theoretical analysis with experimental observations.

Findings

Fermionic picture effectively interprets neutron scattering data.

Dynamic properties of the 2D XY model are characterized using fermionization.

Relevance of the approach for frustrated quantum magnets like Cs_2CuCl_4.

Abstract

We discuss the dynamic properties of the square-lattice spin-1/2 XY model obtained using the two-dimensional Jordan-Wigner fermionization approach. We argue the relevancy of the fermionic picture for interpreting the neutron scattering measurements in the two-dimensional frustrated quantum magnet Cs_2CuCl_4.