5 papers
Contribution of transverse modes to the dynamics of density fluctuations
Giulia De Lorenzi-Venneri, Renzo Vallauri
The transverse and longitudinal current correlation functions are evaluated in liquid and amorphous sodium by computer simulation. The study of the corresponding spectra as a funct…
Vibrational Contribution to Density and Current Autocorrelations in a Monatomic Liquid
Eric D. Chisolm, Giulia De Lorenzi-Venneri, Duane C. Wallace
We consider for a monatomic liquid the density and current autocorrelation functions from the point of view of the Vibration-Transit (V-T) theory of liquid dynamics. We also consid…
Time correlation functions in Vibration-Transit theory of liquid dynamics
Eric D. Chisolm, Giulia De Lorenzi-Venneri, Duane C. Wallace
Within the framework of V-T theory of monatomic liquid dynamics, an exact equation is derived for a general equilibrium time correlation function. The purely vibrational contributi…
Application of Vibration-Transit Theory of Liquid Dynamics to the Brillouin Peak Dispersion Curve
Duane C. Wallace, Giulia De Lorenzi-Venneri, Eric D. Chisolm
The Brillouin peak appears in the dynamic structure factor S(q,w), and the dispersion curve is the Brillouin peak frequency as function of q. The theoretical function underlying S(…
New theoretical description of neutron scattering in a monatomic liquid
Duane C. Wallace, Giulia De Lorenzi-Venneri
In a recently developed theory of the atomic motion in monatomic liquids, the motion is comprised of normal mode vibrations in any of the large number of equivalent random valleys,…