Updating schemes in zero-temperature single-spin flip dynamics

Details Updating schemes in zero-temperature single-spin flip dynamics Updating schemes in zero-temperature single-spin flip dynamics

2008-12-18

arxiv.org/abs/0812.3654v1

Physics

Condensed Matter

Statistical Mechanics

Scientific paper

In this paper we examine the role of the so called $c$-parallel updating schemes in relaxation from disordered states to the final ferromagnetic steady state. We investigate two zero-temperature single-spin flip dynamics on a one dimensional lattice of length $L$: inflow (i.e. generalized zero-temperature Glauber dynamics) and outflow opinion dynamics. The varying $c$ allows us to change the updating scheme from random sequential updating ($c=1/L$) to deterministic synchronous updating (for $c=1$). We show how the mean relaxation times depend on $c$ and scale with the system size $L$. Moreover, we empirically find an analytical formula for the ratio between mean relaxation times for inflow and outflow dynamics. Results obtained in this paper suggest that in some sense the original zero-temperature Glauber dynamics is a critical one among a broader class of inflow dynamics.

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