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Exact Solution of a Yang-Baxter Spin-1/2 Chain Model and Quantum Entanglement

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 نشر من قبل MingGuang Hu
 تاريخ النشر 2008
  مجال البحث فيزياء
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Entanglement is believed to be crucial in macroscopic physical systems for understanding the collective quantum phenomena such as quantum phase transitions. We start from and solve exactly a novel Yang-Baxter spin-1/2 chain model with inhomogeneous and anisotropic short-range interactions. For the ground state, we show the behavior of neighboring entanglement in the parameter space and find that the inhomogeneous coupling strengths affect entanglement in a distinctive way from the homogeneous case, but this would not affect the coincidence between entanglement and quantum criticality.



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