383 citations · 5.3k across the 80 of their papers we have counts for
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cond-mat.str-el2008★ 11 cited
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…
cond-mat.str-el2008★ 39 cited
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…