Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2008-05-14
Physics
Condensed Matter
Strongly Correlated Electrons
9 pages, 17 figures. One figure is removed
Scientific paper
10.1088/0953-8984/20/34/345217
We study the ground state quantum phase transition by means of entanglement in the one-dimensional asymmetric Hubbard model with open boundary condition. The local entanglement between the middle two sites and the rest of the system, and the block entanglement between the left and right portions of the system, are calculated using the density-matrix renormalization group (DMRG) method. We find that the entanglement shows interesting scaling and singular behavior around the phase transition line.
Chan Wai Lam
Gu Shi-Jian
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