Scaling of Entanglement close to a Quantum Phase Transitions

Details Scaling of Entanglement close to a Quantum Phase Transitions Scaling of Entanglement close to a Quantum Phase Transitions

2002-02-05

arxiv.org/abs/quant-ph/0202029v2

Nature 416, 608 (2002)

Physics

Quantum Physics

4 pages, 4 figures, revtex. Stylistic changes and format modified

Scientific paper

10.1038/416608a

In this Letter we discuss the entanglement near a quantum phase transition by analyzing the properties of the concurrence for a class of exactly solvable models in one dimension. We find that entanglement can be classified in the framework of scaling theory. Further, we reveal a profound difference between classical correlations and the non-local quantum correlation, entanglement: the correlation length diverges at the phase transition, whereas entanglement in general remains short ranged.

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