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quant-ph2008
Entanglement in a Dimerized Antiferromagnetic Heisenberg Chain
Xiang Hao, Shiqun Zhu
The entanglement properties in an antiferromagnetic dimerized Heisenberg spin-1/2 chain are investigated. The entanglement gap, which is the difference between the ground-state ene…
quant-ph2008
Entanglement in a hardcore-boson Hubbard model
Xiang Hao, Shiqun Zhu
The entanglement in a Hubbard chain of hardcore bosons is investigated. The analytic expression of the global entanglement in ground state is derived. The divergence of the derivat…