A comparative study for the pair-creation contact process using series expansions
A comparative study for the pair-creation contact process using series expansions
A comparative study between two distinct perturbative series expansions for the pair-creation contact process is presented. In contrast to the ordinary contact process, whose supercritical series expansions provide accurate estimates for its critical behaviour, the supercritical approach does not work properly when applied to the pair-creation process. To circumvent this …