Universality class of absorbing phase transitions with a conserved field
We investigate the critical behavior of systems exhibiting a continuous absorbing phase transition in the presence of a conserved field coupled to the order parameter. The results obtained point out the existence of a new universality class of nonequilibrium phase transitions that characterizes a vast set of systems including conserved threshold transfer processes and stochastic sandpile models.
Rossi
M
International School for Advanced Studies, SISSA/ISAS Via Beirut 2-4, 34014 Trieste, Italy and The Abdus Salam International Centre for Theoretical Physics (ICTP), P.O. Box 586, 34100 Trieste, Italy.
Pastor-Satorras
R
Vespignani
A