Title: COLLECTIVE EXCITATIONS AND GENERALIZED TRANSPORT COEFFICIENTS IN A MOLTEN METALLIC ALLOY LI₄PB
Authors: T.Bryk, I.Mryglod (Institute for Condensed Matter Physics of the National Academy of Sciences of Ukraine, 1 Svientsitsky Str., 79011 Lviv, Ukraine)

Collective dynamics of a molten metallic alloy Li₄Pb is studied using a combination of analytical multivariable approach of generalized collective modes and molecular dynamics simulations. Dispersion and damping of two branches of propagating collective excitations are analyzed in a wide range of wavenumbers. The features in collective dynamics connected with the large difference in species mass are discussed. Generalized k-dependent transport coefficients for Li₄Pb are reported.

Key words: collective dynamics, binary liquid, collective excitation, generalized transport coefficients
PACS: 05.20.Jj, 61.20.Ja, 61.20.Lc