Exact diffusion coefficient for a chain of beads in one dimension using the Einstein relation.
The one-dimensional motion of a chain of N beads is studied to determine its diffusion coefficient. We found an exact analytical expression for all through two methods by resorting to the Einstein relation. Results are tested with the help of Monte Carlo simulations.
Institute of Materials Science and Technology (INTEMA), Universidad Nacional de Mar del Plata-CONICET, Juan B. Justo 4302, 7600 Mar del Plata, Argentina.
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Terranova
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Mártin
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Aldao