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Entanglement Theory Quantum Correlations
Entanglement in the 1D extended anisotropic Heisenberg model
arXiv
Authors: E. Plekhanov, A. Avella, F. Mancini
Year
2007
Paper ID
50121
Status
Preprint
Abstract Read
~2 min
Abstract Words
91
Citations
N/A
Abstract
We present a study of entanglement in the case of the 1D extended anisotropic Heisenberg model. We investigate two quantum phase transitions (QPTs) within the previously found ergodicity phase diagram \[E. Plekhanov, A. Avella, and F. Mancini Phys. Rev. B 74, 115120 (2006)\]. Our calculations are done by means of the numerically exact Lanczos method at T=0, followed by a finite-size scaling. As a measure of entanglement we use the concurrence for two spins out of the system. We conclude from our studies that these QPTs are accompanied by a qualitative entanglement change.
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- This paper contributes to the Entanglement Theory & Quantum Correlations research area in the Quantum Articles archive.
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- We present a study of entanglement in the case of the 1D extended anisotropic Heisenberg model.
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