Abstract

Abstract The second coefficient of the coupling constant expansion of the average velocity of a test electron moving in a compensated one-component plasma (OCP) is calculated by integrating over initial configurations. It is assumed that correlations are absent at time t =0. The result is convergent and in agreement with the small coupling limit of the frictional force derived earlier. It is further shown that if the three additional assumptions of the conventional theory are made before integration, the logarithmic divergence reappears in the results.

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