Back to Search
Start Over
SU(3) quantum critical model emerging from a spin-1 topological phase.
- Source :
-
Physical Review B . Apr2016, Vol. 93 Issue 16, p1-1. 1p. - Publication Year :
- 2016
-
Abstract
- Different from the spin-1 Haldane gapped phase, we propose an SO(3) spin-1 matrix product state (MPS), whose parent Hamiltonian includes three-site spin interactions. From the entanglement spectrum of a single block with l sites, an enlarged SU(3) symmetry is identified in the edge states, which are conjugate to each other for the l=even block but identical for the l=odd block. By blocking this state, the blocked MPS explicitly displays the SU(3) symmetry with two distinct structures. Under a symmetric bulk bipartition with a sufficient large block length l=even, the entanglement Hamiltonian (EH) of the reduced system characterizes a spontaneous dimerized phase with twofold degeneracy. However, for the block length l=odd, the corresponding EH represents an SU(3) quantum critical point with delocalized edge quasiparticles, and the critical field theory is described by the SU(3) level-1 Wess-Zumino-Witten conformal field theory. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 24699950
- Volume :
- 93
- Issue :
- 16
- Database :
- Academic Search Index
- Journal :
- Physical Review B
- Publication Type :
- Academic Journal
- Accession number :
- 117454410
- Full Text :
- https://doi.org/10.1103/PhysRevB.93.165135