Verkholyak, T.; Honecker, A.; Brenig, W. - In: The European Physical Journal B - Condensed Matter and … 49 (2006) 3, pp. 283-287
The Jordan-Wigner transformation is applied to study the ground state properties and dimerization transition in the J<Subscript>1</Subscript>-J<Subscript>2</Subscript> XXZ chain. We consider different solutions of the mean-field approximation for the transformed Hamiltonian. Ground state energy and the static structure factor are compared...</subscript></subscript>