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

We show numerically that the “deconfined” quantum critical point between the Neel 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 Neel vector and the valence-bond solid order parameter to be rotated int...

Disgrifiad llawn

Manylion Llyfryddiaeth
Prif Awduron: Nahum, A, Serna, P, Chalker, J, Ortuño, M, Somoza, A
Fformat: Journal article
Iaith:English
Cyhoeddwyd: American Physical Society 2015