The role of q-spin singlet pairs of physical spins in the dynamical properties of the spin-1/2 Heisenberg-Ising XXZ chain

Dynamical correlation functions contain important physical information on correlated spin models. Here a dynamical theory suitable to the Δ=1 isotropic spin-1/2 Heisenberg chain in a longitudinal magnetic field is extended to anisotropy Δ>1. The aim of this paper is the study of the (k,ω)-plane l...

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Bibliographic Details
Main Authors: José M.P. Carmelo, Pedro D. Sacramento
Format: article
Language:EN
Published: Elsevier 2022
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Online Access:https://doaj.org/article/36fdf0410a55416a8320305003b30abb
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