"Quantum phase transitions" in classical nonequilibrium processes

Details "Quantum phase transitions" in classical nonequilibrium processes "Quantum phase transitions" in classical nonequilibrium processes

1999-08-30

arxiv.org/abs/cond-mat/9908450v4

Physica E 9, 600 (2001)

Physics

Condensed Matter

9 pages, 3 figures included

Scientific paper

10.1016/S1386-9477(00)00268-X

Diffusion limited reaction of the Lotka-Volterra type is analyzed taking into account the discrete nature of the reactants. In the continuum approximation, the dynamics is dominated by an elliptic fixed-point. This fixed-point becomes unstable due to discretization effects, a scenario similar to quantum phase transitions. As a result, the long-time asymptotic behavior of the system changes and the dynamics flows into a limit cycle. The results are verified by numerical simulations.

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