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|Title:||Quantum instability and edge entanglement in the quasi-long-range order|
|Authors:||Son, W. |
|Source:||Son, W., Amico, L., Plastina, F., Vedral, V. (2009-02-02). Quantum instability and edge entanglement in the quasi-long-range order. Physical Review A - Atomic, Molecular, and Optical Physics 79 (2) : -. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevA.79.022302|
|Abstract:||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 study the transition to the thermodynamic limit and argue that the topological order can be described in terms of kink-antikink pairs and marked by edge spin entanglement. © 2009 The American Physical Society.|
|Source Title:||Physical Review A - Atomic, Molecular, and Optical Physics|
|Appears in Collections:||Staff Publications|
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