Quantum instability and edge entanglement in the quasi-long-range order
We investigate the buildup of quasi-long-range order in the XX chain with a transverse magnetic field at finite size. As the field is varied, the ground state of the system displays multiple level crossings producing a sequence of entanglement jumps. Using the partial fidelity and susceptibility, we...
| Main Authors: | , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2009
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