Critical point particle number fluctuations from molecular dynamics

We study fluctuations of particle number in the presence critical point by utilizing molecular dynamics simulations classical Lennard-Jones fluid a periodic box. The numerical solution $N$-body problem naturally incorporates all correlations, exact conservation laws, and finite size effects, allowing us to fluctuation signatures dynamical setup. find that large associated with are observed when measurements performed coordinate subspace, but, absence collective flow expansion, essentially washed out momentum cuts imposed instead. put our findings context event-by-event heavy-ion collisions.