Spin-1/2 XX Chains with Three-Spin Interactions

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Date

2008

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ICM

Abstract

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 many-fermion dynamic quantity.We illustrate how the three-spin interactions manifest themselves in the dynamic probes.

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Citation

Verkholyak, Taras; Derzhko, Oleg; Krokhmalskii, Taras; Stolze, Joachim: Spin-1/2 XX Chains with Three-Spin Interactions. In:

URI

http://hdl.handle.net/2003/25461
 http://dx.doi.org/10.17877/DE290R-3145

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Stolze, Joachim Prof. Dr.