Entanglement properties of quantum spin chains

Details Entanglement properties of quantum spin chains Entanglement properties of quantum spin chains

2006-02-28

arxiv.org/abs/quant-ph/0602233v2

Phys. Rev. A 74, 022327 (2006)

Physics

Quantum Physics

5 pages, 6 figures

Scientific paper

10.1103/PhysRevA.74.022327

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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