Please use this identifier to cite or link to this item:
|Title:||Quantum phase transition between cluster and antiferromagnetic states|
|Authors:||Son, W. |
|Source:||Son, W., Amico, L., Fazio, R., Hamma, A., Pascazio, S., Vedral, V. (2011-09). Quantum phase transition between cluster and antiferromagnetic states. EPL 95 (5) : -. ScholarBank@NUS Repository. https://doi.org/95/50001|
|Abstract:||We study a Hamiltonian system describing a three-spin-1/2 cluster-like interaction competing with an Ising-like exchange. We show that the ground state in the cluster phase possesses symmetry protected topological order. A continuous quantum phase transition occurs as result of the competition between the cluster and Ising terms. At the critical point the Hamiltonian is self-dual. The geometric entanglement is also studied and used to investigate the quantum phase transition. Our findings in one dimension corroborate the analysis of the two-dimensional generalization of the system, indicating, at a mean-field level, the presence of a direct transition between an antiferromagnetic and a valence bond solid ground state. © 2011 EPLA.|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
WEB OF SCIENCETM
checked on Mar 7, 2018
checked on Feb 25, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.