On integrable Hamiltonians for higher spin XXZ chain
Abstract
Integrable Hamiltonians for higher spin periodic XXZ chains are constructed in terms of the spin generators; explicit examples for spins up to 3/2 are given. Relations between Hamiltonians for some Uq(sl2)-symmetric and U(1)-symmetric universal r-matrices are studied; their properties are investigated. A certain modification of the higher spin periodic chain Hamiltonian is shown to be an integrable Uq(sl2)-symmetric Hamiltonian for an open chain.
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