Details

Autor(en) / Beteiligte

• 张业奇 贺启亮 胡征达 刘纪彩

Titel

Quantum Dissonance as an Indicator of Quantum Phase Transition in the XXZ Chain

Ist Teil von

• Chinese physics letters, 2014-06, Vol.31 (6), p.9-12

Erscheinungsjahr

2014

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• We investigate the behavior of quantum dissonance in the anti-ferromagnetic XXZ spin S = 1/2 chain, which exhibits a quantum phase transition. Based on a unified view of quantum and classical correlations, quantum dissonance is analytically calculated and is compared with entanglement, discord, and classical correlations for the ground state of the system. It is found that the nearest-neighbor quantum dissonance achieves an extremum and exhibits the sharpest change at the critical point. Therefore, quantum dissonance may serve as a more efficient indicator of quantum phase transitions in the XXZ spin chain.