Quantum discord and quantum phase transition in spin chains

By R. Dillenschneider. 2008

348 citations recorded by the source corpus.

Quantum phase transitions of the transverse Ising and antiferromagnetic $XXZ$ spin $S=1/2$ chains are studied using quantum discord. Quantum discord allows the measure of quantum correlations present in many-body quantum systems. It is shown that the amount of quantum correlations increases close to the critical points. The observations are in agreement with the information provided by the concurrence, which measures the entanglement of the many-body system.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/861a32d7c7d60db4402d3079b88664e082172047

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Artificial Intelligence

1. Kavan Modi
2. Tomasz Paterek
3. H. Cable
4. Aharon Brodutch
5. Yu-Ran Zhang
6. Yi Peng
7. Jieci Wang
8. Ming‐Liang Hu

In Atomic and Molecular Physics, and Optics

1. Kavan Modi
2. Tomasz Paterek
3. H. Cable
4. Aharon Brodutch
5. Heng Fan
6. Ming‐Liang Hu
7. Yu-Ran Zhang
8. Yi Peng

Citations in the corpus

• The classical-quantum boundary for correlations: Discord and related measures (2011, background): “One of the first studies on quantum discord in a spin chain is given by (Dillenschneider, 2008) who analyzed QPT in a transverse Ising chain.”
• Quantum coherence and geometric quantum discord (2017, background): “Dillenschneider (2008) studied QD for ground states of the transverse Ising and Heisenberg XXZ model, and found that the amount of QD increases close to the QPT points.”