Condensed Matter Physics, 2012, vol. 15, No. 1, 14001: 1-6
DOI:10.5488/CMP.15.14001
arXiv:1112.4743v2
Title:
On the problem of a consistent description of kinetic and
hydrodynamic processes in dense gases and liquids: Collective
excitations spectrum
Author(s):
 
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B.B. Markiv
(Institute for Condensed Matter Physics of the
National Academy of Sciences of Ukraine, 1 Svientsitskii Str.,
79011 Lviv, Ukraine)
,
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I.P. Omelyan
(Institute for Condensed Matter Physics of the
National Academy of Sciences of Ukraine, 1 Svientsitskii Str.,
79011 Lviv, Ukraine)
 
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M.V. Tokarchuk
(Institute for Condensed Matter Physics of the
National Academy of Sciences of Ukraine, 1 Svientsitskii Str.,
79011 Lviv, Ukraine)
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Based on the generalized non-Markovian
equations obtained earlier for a nonequilibrium one-particle distribution
function and potential part of the averaged enthalpy density
[Markiv B.B., Omelyan I.P, Tokarchuk M.V., Condens. Matter
Phys., 2010, 13, 23005] a spectrum of collective excitations
is investigated, where the potential of interaction between particles is
presented as a sum of the potential of hard spheres and a certain
long-range potential.
Key words:
kinetics, hydrodynamics, kinetic equations, memory functions, collective modes
PACS:
05.20.Dd, 05.60.+w, 52.25.Fi, 82.20.M
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