Transverse spin helices in XXZ chains with single-ion anisotropy decay slowly for chosen wave numbers and can be stabilized by easy-axis exchange anisotropy, per iTEBD simulations and spin-wave estimates.
For fixedSandDthe initial decay is slowest, if the phantom condition (9) is satisfied
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Decay of spin helices in XXZ quantum spin chains with single-ion anisotropy
Transverse spin helices in XXZ chains with single-ion anisotropy decay slowly for chosen wave numbers and can be stabilized by easy-axis exchange anisotropy, per iTEBD simulations and spin-wave estimates.