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Physics  2005 

Velocity and diffusion coefficient of $A+A\leftrightarrow A$ reaction fronts in one dimension

DOI: 10.1103/PhysRevE.74.011109

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We study front propagation in the reversible reaction-diffusion system A + A <-> A on a 1-d lattice. Extending the idea of leading particle in studying the motion of the front we write a master equation in the stochastically moving frame attached to this particle. This approach provides a systematic way to improve on estimates of front speed obtained earlier. We also find that the leading particle performs a correlated random walk and this correlation needs to be taken into account to get correct value of the front diffusion coefficient.


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