3 problems

Let the directed-percolation (DP) and pair-contact process (PCP) models be considered at their steady-state critical transitions, and let $m_n=\langle\rho^n\rangle$ denote order-pa…

Consider models with a continuous absorbing-state phase transition and short-range interactions. Directed percolation universality conjecture. Only a few conditions are necessary f…

Janssen–Grassberger conjecture. The transition generically belongs to the directed percolation universality class if: (a) it is to a unique absorbing state from a fluctuating activ…