Multipartite entanglement measures and quantum criticality from matrix and tensor product states

Ching Yu Huang, Feng Li Lin

研究成果: 雜誌貢獻文章

37 引文 斯高帕斯(Scopus)

摘要

We compute the multipartite entanglement measures such as the global entanglement of various one- and two-dimensional quantum systems to probe the quantum criticality based on the matrix and tensor product states (MPSs and TPSs). We use the infinite time-evolving block decimation (iTEBD) method to find the ground states numerically in the form of MPSs and TPSs, and then evaluate their entanglement measures by the method of tensor renormalization group (TRG). We find that these entanglement measures can characterize the quantum phase transitions by their derivative discontinuity right at the critical points in all models considered here. We also comment on the scaling behaviors of the entanglement measures by the ideas of quantum-state renormalization group transformations.

原文英語
文章編號032304
期刊Physical Review A - Atomic, Molecular, and Optical Physics
81
發行號3
DOIs
出版狀態已發佈 - 2010 三月 5

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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