Matrix product eigenstates for one-dimensional stochastic models and quantum spin chains
Abstract
We show that all zero-energy eigenstates of an arbitrary m-state quantum spin chain Hamiltonian with nearest-neighbour interaction in the bulk and single site boundary terms, which can also describe the dynamics of stochastic models, can be written as matrix product states. This means that the weights in these states can be expressed as expectation values in a Fock representation of an algebra generated by 2m operators fulfilling quadratic relations which are defined by the Hamiltonian.
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