Solitons in Ising-like quantum spin chains in a magnetic field : a second quantization approach
- 1 January 1987
- journal article
- Published by EDP Sciences in Journal de Physique
- Vol. 48 (10) , 1663-1670
- https://doi.org/10.1051/jphys:0198700480100166300
Abstract
We propose a second quantization formalism for the soliton modes in the s =112 Ising-like antiferromagnetic chain. We give the exact expressions, within the one-soliton approximation, for the dynamical structure factors in presence of a magnetic field, either parallel or perpendicular to the chain. We show that the field gives rise to a splitting of the soliton modes. We also derive the spin correlation function relative to the antiferromagnetic mode for finite and infinite chainsKeywords
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