Abstract
We present a general method to construct one-dimensional translationally invariant valence-bond solid states with a built-in Lie group and derive their matrix product representations. The general strategies to find their parent Hamiltonians are provided so that the valence-bond solid states are their unique ground states. For quantum integer-spin- chains, we discuss two topologically distinct classes of valence-bond solid states: one consists of two virtual spin- variables in each site and another is formed by using two spinors. Among them, a spin-1 fermionic valence-bond solid state, its parent Hamiltonian, and its properties are discussed in detail. Moreover, two types of valence-bond solid states with symmetries are further generalized and their respective properties are analyzed as well.
- Received 6 April 2009
DOI:https://doi.org/10.1103/PhysRevB.80.014401
©2009 American Physical Society