110 citations · 221 across the 4 of their papers we have counts for
4 papers
Exact models for trimerization and tetramerization in spin chains
Stephan Rachel, Martin Greiter
We present exact models for an antiferromagnetic S=1 spin chain describing trimerization as well as for an antiferromagnetic S=3/2 spin chain describing tetramerization. These mode…
Valence bond solid states with symplectic symmetry
Dirk Schuricht, Stephan Rachel
We introduce a one-dimensional valence bond solid (VBS) state with symplectic symmetry SP(n) and construct the corresponding parent Hamiltonian. We argue that there is a gap in the…
Valence bond solids for SU(n) spin chains: exact models, spinon confinement, and the Haldane gap
Martin Greiter, Stephan Rachel
To begin with, we introduce several exact models for SU(3) spin chains: (1) a translationally invariant parent Hamiltonian involving four-site interactions for the trimer chain, wi…
Exact results for SU(3) spin chains: trimer states, valence bond solids, and their parent Hamiltonians
Martin Greiter, Stephan Rachel, Dirk Schuricht
We introduce several exact models for SU(3) spin chains: (1) a translationally invariant parent Hamiltonian involving four-site interactions for the trimer chain, with a three-fold…