Role of many-body correlations in dynamics of liquids.
A time correlation function is written exactly in terms of infinite series with each term containing contributions separately due to two, three, and higher body static correlations. For a time correlation function of force acting on a tagged particle, it is found that contributions due to two and three body static correlation functions are sufficient to understand dynamics of dense gases whereas at the triple point and in the glassy phase it is necessary to include contributions due to a four body correlation function.
Sharma
Puneet
P
Centre of Advanced Study in Physics, Panjab University, Chandigarh 160 014, India.
Tankeshwar
K
K
Pathak
K N
KN
Ranganathan
S
S