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Ageing in the contact process: Scaling behavior and universal features

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arxiv cond-mat/0610260 v1 pith:QRAWVARJ submitted 2006-10-10 cond-mat.stat-mech hep-th

Florian Baumann , Andrea Gambassi This is my paper · ORCID
classification cond-mat.stat-mechhep-th
keywords functionscalingageingbehaviorcontactprocessresponsetwo-time
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We investigate some aspects of the ageing behavior observed in the contact process after a quench from its active phase to the critical point. In particular we discuss the scaling properties of the two-time response function and we calculate it and its universal ratio to the two-time correlation function up to first order in the field-theoretical epsilon-expansion. The scaling form of the response function does not fit the prediction of the theory of local scale invariance. Our findings are in good qualitative agreement with recent numerical results.

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  1. Physical ageing from generalised time-translation-invariance

    cond-mat.stat-mech 2025-04 conditional novelty 5.0 of 10

    A single time-dependent symmetry transformation is claimed to explain the known scaling phenomenology of physical ageing and to predict new finite-size plateau scalings.

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