Zeitschrift für Physik B Condensed Matter

, Volume 47, Issue 4, pp 365–374

On phase transitions in Schlögl's second model

  • P. Grassberger

DOI: 10.1007/BF01313803

Cite this article as:
Grassberger, P. Z. Physik B - Condensed Matter (1982) 47: 365. doi:10.1007/BF01313803


We study Schlögl's second model, characterized by chemical reactions
$$\begin{array}{*{20}c} {2X\underset{{k_2 }}{\overset{{k_1 }}{\longleftrightarrow}}3X,} & {X\underset{{k_4 }}{\overset{{k_3 }}{\longleftrightarrow}}0,} \\ \end{array} $$
ind-dimensional space. The reactions are assumed to be local; local fluctuations are fully taken into account, and particle transport occurs via diffusion.

In contrast to previous investigations, we find no phase transition whenk4≠0 andd<4. Fork4=0,k3≠0, and 1≦d<4, we find a second-order phase transition which is in the same universality class as the transition in Schlögl's first model. Only ford≧4 we do find the first-order transition found also by previous authors.

These claims are supported by extensive Monte Carlo calculations for various realizations of this process on discrete space-time lattices.

Copyright information

© Springer-Verlag 1982

Authors and Affiliations

  • P. Grassberger
    • 1
  1. 1.Physik Department der UniversitätWuppertalFederal Republic of Germany

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