Emergent SO(5) Symmetry at the Néel to Valence-Bond-Solid Transition

We show numerically that the “deconfined” quantum critical point between the Néel antiferromagnet and the columnar valence-bond solid, for a square lattice of spin 1/2, has an emergent SO(5) symmetry. This symmetry allows the Néel vector and the valence-bond solid order parameter to be rotated into...

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Bibliographic Details
Main Authors: Nahum, Adam, Serna, P., Chalker, J. T., Somoza, A. M., Ortuno, M.
Other Authors: Massachusetts Institute of Technology. Department of Physics
Format: Article
Language:English
Published: American Physical Society 2015
Online Access:http://hdl.handle.net/1721.1/100557
https://orcid.org/0000-0002-3488-4532