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Entanglement properties of quantum spin chains

Stein Olav Skrøvseth
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Abstract

We investigate the entanglement properties of a finite size 1+1 dimensional Ising spin chain, and show how these properties scale and can be utilized to reconstruct the ground state wave function. Even at the critical point, few terms in a Schmidt decomposition contribute to the exact ground state, and to physical properties such as the entropy. Nevertheless the entanglement here is prominent due to the lower-lying states in the Schmidt decomposition.

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Stein Olav Skrøvseth. 2006-08-30. Entanglement properties of quantum spin chains. https://doi.org/10.1103/physreva.74.022327

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