Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2008-11-24
Phys. Rev. Lett. 102, 135702 (2009)
Physics
Condensed Matter
Strongly Correlated Electrons
Phys. Rev. Lett. (to be published)
Scientific paper
10.1103/PhysRevLett.102.135702
We study the influence of topology on the quench dynamics of a system driven across a quantum critical point. We show how the appearance of certain edge states, which fully characterise the topology of the system, dramatically modifies the process of defect production during the crossing of the critical point. Interestingly enough, the density of defects is no longer described by the Kibble-Zurek scaling, but determined instead by the non-universal topological features of the system. Edge states are shown to be robust against defect production, which highlights their topological nature.
Amico Luigi
Bermudez Alejandro
Martin-Delgado Miguel Angel
Patanè Domenico
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