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Entanglement in an SU(n) Valence-Bond-Solid State
Hosho Katsura, Takaaki Hirano, Vladimir E. Korepin
We investigate entanglement properties in the ground state of the open/periodic SU() generalized valence-bond-solid state consisting of representations of SU(). We obtain exa…
Topological Classification of Gapped Spin Chains :Quantized Berry Phase as a Local Order Parameter
Takaaki Hirano, Hosho Katsura, Yasuhiro Hatsugai
We characterize several phases of gapped spin systems by local order parameters defined by quantized Berry phases. This characterization is topologically stable against any small p…
Entanglement Entropy in the Calogero-Sutherland Model
Hosho Katsura, Yasuyuki Hatsuda
We investigate the entanglement entropy between two subsets of particles in the ground state of the Calogero-Sutherland model. By using the duality relations of the Jack symmetric…
Exact Analysis of Entanglement in Gapped Quantum Spin Chains
Hosho Katsura, Takaaki Hirano, Yasuhiro Hatsugai
We investigate the entanglement properties of the valence-bond-solid states with generic integer-spin . Using the Schwinger boson representation of the valence-bond-solid states…