Computer studies of dynamics in one dimension: Hard rods

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Abstract
Results of molecular dynamics simulations are reported with emphasis on the relaxation of an initially ordered array of hard rods in one dimension. It is found that at high densities the pressure accurately approaches the exact value for the infinite system, which corresponds to a uniform fluid, before the singlet and pair configuration space distribution functions have completely relaxed to the equilibrium state. The velocity autocorrelation function is computed over a wide range of times, which includes the region where it is negative, and compared to the exact solution for the infinite system.

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