Hydrodynamic behavior near dynamical criticality of a facilitated conservative lattice gas.
basic_science · Level V
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- Record sourced from PubMed, PMID 39425426.
- Also identified by DOI 10.1103/PhysRevE.110.L032101.
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Abstract
We investigate a 2d-conservative lattice gas exhibiting a dynamical active-absorbing phase transition with critical density ρ_{c}. We derive the hydrodynamic equation for this model, showing that all critical exponents governing the large scale behavior near criticality can be obtained from two independent ones. We show that as the supercritical density approaches criticality, distinct length scales naturally appear. Remarkably, this behavior is different from the subcritical one. Numerical simulations support the critical relations and the scale separation.