Pairwise entanglement and geometric phase in high dimensional free-Fermion lattice systems |
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Authors: | H T Cui and Y F Zhang |
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Institution: | (1) Department of Physics, Anyang Normal University, 455000, Anyang, P.R. China |
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Abstract: | The pairwise entanglement, measured by concurrence and
geometric phase in high dimensional free-Fermion lattice systems
have been studied in this paper. When the system stays at the ground
state, their derivatives with the external parameter show the
singularity closed to the phase transition points, and can be used
to detect the phase transition in this model. Furthermore our
studies show for the free-Fermion model that both concurrence and
geometric phase show the intimate connection with the correlation
functions. The possible connection between concurrence and geometric
phase has been also discussed. |
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Keywords: | PACS" target="_blank">PACS 03 65 Vf Phases: geometric dynamic or topological 03 65 Ud Entanglement and quantum nonlocality 05 70 Fh Phase transitions: general studies |
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