Spin-1/2 XX Chains with Three-Spin Interactions
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چکیده
منابع مشابه
Spin-1/2 XX Chains with Three-Spin Interactions
We consider a spin-1/2 XX chain with three-spin interactions which is equivalent to a system of noninteracting spinless fermions.We examine some dynamic quantities of the spin model.In particular,we calculate analytically the dynamic transverse (zz) structure factor which is governed by a two-fermion excitation continuum.Moreover,we compute numerically the dynamic xx structure factor which is a...
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C. A. Lamas,1 D. C. Cabra,1,2,3 M. D. Grynberg,1 and G. L. Rossini1 1Departamento de Física, Universidad Nacional de La Plata, C.C. 67, 1900 La Plata, Argentina 2Laboratoire de Physique Théorique, Université Louis Pasteur, 3 Rue de l’Université, 67084 Strasbourg, Cédex, France 3Facultad de Ingeniería, Universidad Nacional de Lomas de Zamora, Cno. de Cintura y Juan XXIII, (1832) Lomas de Zamora,...
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ژورنال
عنوان ژورنال: Acta Physica Polonica A
سال: 2008
ISSN: 0587-4246,1898-794X
DOI: 10.12693/aphyspola.113.437