Figure 4

Symmetry-breaking transition. (A, B) Distribution $P(A)$ of the final medium value A reached after a time $min(\tau ,{\tau }_{max})$ has elapsed, for varying N. The selected ${\mu }_A$ values represent regimes I (A) and II (B). (C) Standard deviation $\sigma (A)$ of the final medium value as a function of ${\mu }_A$, for several values of N. This order parameter signals a symmetry-breaking transition between regimes I and II. Simulations correspond to ${ϵ}_T=0.2$, ${ϵ}_A=0.0375$ and ${\tau }_{max}={10}^4$, with averages over 10⁴ realizations.