Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2009-07-09
Physics
Condensed Matter
Statistical Mechanics
The previous version was corrupted - some figures misplaced, some strange words that did not belong. Otherwise identical
Scientific paper
We present a theory for the coagulation reaction A+A -> A for particles moving subdiffusively in one dimension. Our theory is tested against numerical simulations of the concentration of $A$ particles as a function of time (``anomalous kinetics'') and of the interparticle distribution function as a function of interparticle distance and time. We find that the theory captures the correct behavior asymptotically and also at early times, and that it does so whether the particles are nearly diffusive or very subdiffusive. We find that, as in the normal diffusion problem, an interparticle gap responsible for the anomalous kinetics develops and grows with time. This corrects an earlier claim to the contrary on our part.
Lindenberg Katja
Ruiz-Lorenzo Juan Jesus
Yuste Santos B.
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