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Entanglement and Spontaneous Symmetry Breaking in Quantum Spin Models | | Olav F. Syljuasen
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11 Jul 2003 | | Journal: | Phys. Rev. A 68, 060301 (2003) | | Subject: | quant-ph | | Abstract: | It is shown that spontaneous symmetry breaking does not modify the ground-state entanglement of two spins, as defined by the concurrence, in the XXZ- and the transverse field Ising-chain. Correlation function inequalities, valid in any dimensions for these models, are presented outlining the regimes where entanglement is unaffected by spontaneous symmetry breaking. | | Source: | arXiv, quant-ph/0307087 | | Services: | Forum | Review | PDF | Favorites | |
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