Local quantum Fisher information and one-way quantum deficit in spin-$\frac{1}{2}$ $XX$ Heisenberg chain with three-spin interaction

TL;DR

This paper investigates quantum phase transitions in a spin-1/2 XX Heisenberg chain with three-spin interactions using local quantum Fisher information and one-way quantum deficit, providing analytical insights into quantum fluctuations.

Contribution

It introduces analytical methods to study quantum phase transitions via local quantum Fisher information and one-way quantum deficit in a specific spin chain model.

Findings

Identification of quantum phase transition points

Analytical expressions for quantum correlations

Insights into quantum fluctuations in the model

Abstract

We explore quantum phase transitions in the spin-1/2 $XX$ chain with three-spin interaction in terms of local quantum Fisher information and one-way quantum deficit, together with the demonstration of quantum fluctuations. Analytical results are derived and analyzed in detail.