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Collective Modes in Strongly Coupled Binary Liquids
Author(s) -
Kalman G.J.,
Donkó Z.,
Hartmann P.,
Golden K.I.,
Kyrkos S.
Publication year - 2012
Publication title -
contributions to plasma physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0863-1042
DOI - 10.1002/ctpp.201100093
Subject(s) - yukawa potential , physics , binary number , coupling (piping) , limit (mathematics) , oscillation (cell signaling) , component (thermodynamics) , range (aeronautics) , statistical physics , mode (computer interface) , field (mathematics) , collective behavior , mean field theory , quantum electrodynamics , condensed matter physics , quantum mechanics , materials science , mathematical analysis , chemistry , computer science , arithmetic , mathematics , pure mathematics , metallurgy , composite material , operating system , sociology , anthropology , biochemistry
We analyze the collective excitations in two‐ and three‐dimensional binary Yukawa systems, consisting of two components with different masses. Theoretical analysis reveals a profound difference between the weakly and strongly correlated limits: at weak coupling the two components interact via the mean field only and the oscillation frequency is governed by the light component. In the strongly correlated limit the mode frequency is governed by the combined mass, where the heavy component dominates. Computer simulations in the full coupling range extend and confirm the theoretical results (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)