Аннотация
The dynamical relaxation and scaling properties of three different
variants of the contact process in two spatial dimensions are analysed.
Dynamical contact processes capture a variety of contagious processes
such as the spreading of diseases or opinions. The universality of both
local and global two-time correlators of the particle-density and the
associated linear responses are tested through several scaling relations
of the non-equilibrium exponents and the shape of the associated scaling
functions. In addition, the dynamical scaling of two-time global
correlators can be used as a tool to improve on the determination of the
location of critical points.
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