Condensed Matter Physics, 1999, vol. 2, No. 2(18), p. 221-226, English
DOI:10.5488/CMP.2.2.221

Title: DYNAMIC STRUCTURE FACTORS OF A HEISENBERG MODEL FERROFLUID
Authors: I.Mryglod (Institute for Condensed Matter Physics, of the National Academy of Sciences of Ukraine, 1 Svientsitskii Str., 290011 Lviv, Ukraine), R.Folk (Institut f\"{u}r Theoretische Physik, Universit\"{a}t Linz, Altenbergerstr. 69, A-4040 Linz, \"{O}sterreich), S.Dubyk, Yu.Rudavskii (State University Lvivska Politekhnika'', 12 Bandera Str., 290013 Lviv, Ukraine)

Using the results of our previous papers [Physica A 220 (1995) 325; Physica A 234 (1996) 129], where the generalized transport equations for a Heisenberg-like model of a ferrofluid were derived and the hydrodynamic collective mode spectrum has been studied, in this work we consider the expressions for hydrodynamic time correlation functions in the limit of small wavenumbers $k$ and frequencies $\omega$. The analytical results for the time correlation functions of particle density--particle density' and spin density--spin density', being exact in the hydrodynamic limit, are obtained. The expressions for the corresponding dynamical structure factors are analyzed.

Comments: Figs. 0, Refs. 7, Tabs. 0.

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