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Quasi-stationary simulation: the subcritical contact process

Marcelo Martins de Oliveira·Ronald Dickman
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Abstract

We apply the recently devised quasi-stationary simulation method to study the lifetime and order parameter of the contact process in the subcritical phase. This phase is not accessible to other methods because virtually all realizations of the process fall into the absorbing state before the quasi-stationary regime is attained. With relatively modest simulations, the method yields an estimate of the critical exponent nu_|| with a precision of 0.5%.

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Marcelo Martins de Oliveira, Ronald Dickman. 2006-01-09. Quasi-stationary simulation: the subcritical contact process. https://arxiv.org/abs/cond-mat/0601163

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