Random $s=1/2$ $XY$ chains and the theory of quasi-one-dimensional ferroelectrics with hydrogen bonds

TL;DR

This paper introduces a novel numerical method to analyze the thermodynamic and dynamic behaviors of finite spin-1/2 XY chains, focusing on disorder effects on susceptibility in related Ising models.

Contribution

It provides a new numerical approach for studying finite XY chains and explores disorder effects on susceptibility in random transverse field Ising chains.

Findings

Disorder significantly affects the transverse dynamical susceptibility.

The new numerical method effectively captures thermodynamic properties.

Results enhance understanding of quasi-one-dimensional ferroelectrics.

Abstract

The paper presents a new numerical approach for studying the thermodynamical and dynamical properties of finite spin-$\frac{1}{2}$ $XY$ chains. Special attention is given to examining the influence of disorder on the average transverse dynamical susceptibility of Ising chain in random transverse field.