Collective modes in strongly correlated yukawa liquids: waves in dusty plasmas.
We determine the collective mode structure of a strongly correlated Yukawa fluid, with the purpose of analyzing wave propagation in a strongly coupled dusty plasma. We identify a longitudinal plasmon and a transverse shear mode. The dispersion is characterized by a low- k acoustic behavior, a frequency maximum well below the plasma frequency, and a high- k merging of the two modes around the Einstein frequency of localized oscillations. The damping effect of collisions between neutrals and dust grains is estimated.
Kalman
G
G
Department of Physics, Boston College, Chestnut Hill, Massachusetts 02467, USA.
Rosenberg
M
M
DeWitt
H E
HE