Irreversible phase transitions into non-unique absorbing states in a multicomponent reaction system

Continuous irreversible phase transitions (IPT's) from active states to non-unique absorbing states in a tri-molecular irreversible reaction model have been studied using a model which involves one monomer and two different dimers, by means of Monte Carlo simulations. Dynamic critical exponents obtained from the simulations strongly suggest that the IPT's belong to the same universality class as directed percolation (DP). This results allows us to further extend the DP conjecture for systems with infinitely many absorbing states, from single component systems to multicomponent systems.