Dynamics of transverse correlations in the spin-1/2 isotropic XY chain with a correlated Lorentzian disorder

Details Dynamics of transverse correlations in the spin-1/2 isotropic XY chain with a correlated Lorentzian disorder Dynamics of transverse correlations in the spin-1/2 isotropic XY chain with a correlated Lorentzian disorder

1998-11-02

arxiv.org/abs/cond-mat/9811021v1

Physics

Condensed Matter

13 pages, 8 figures

Scientific paper

Using a numerical approach we examine the dynamics of $zz$ correlations for the spin-$1\over2$ isotropic XY chain with random Lorentzian intersite coupling and transverse field at sites that depends linearly on the neighbouring couplings. We study in detail the wave vector- and frequency-dependent $zz$ structure factor at different values of Hamiltonian parameters and temperature. We discuss the changes in the frequency profiles of the $zz$ dynamic structure factor caused by the introduced correlated disorder.

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