Field theory of absorbing phase transitions with a nondiffusive conserved field
We investigate the critical behavior of a reaction-diffusion system exhibiting a continuous absorbing-state phase transition. The reaction-diffusion system strictly conserves the total density of particles, represented as a nondiffusive conserved field, and allows an infinite number of absorbing configurations. Numerical results show that it belongs to a wide universality class that also includes stochastic sandpile models. We derive microscopically the field theory representing this universality class.
Pastor-Satorras
R
Departament de Fisica Fonamental, Facultat de Fisica, Universitat de Barcelona, Avenida Diagonal 647, 08028 Barcelona, Spain and The Abdus Salam International Centre for Theoretical Physics (ICTP), P.O. Box 586, 34100 Trieste, Italy.
Vespignani
A