Factorized ground state in dimerized spin chains
نویسنده
چکیده
The possibility of observing factorized ground states in dimerized spin systems is studied. A set of sufficient conditions is derived which allows one to establish whether or not it is possible to have factorization both in nearestneighbor and long-range Hamiltonians. These conditions can be derived by forcing factorization for each of the pairwise terms of the total Hamiltonian. Due to the peculiar structure of a dimerized chain, an antiferromagnetic factorized ground state of the kind | ↗〉, | ↗〉, | ↖〉, | ↖〉 (forbidden in regular chains) is possible. Factorized ground state in dimerized spin chains 2
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تاریخ انتشار 2010