title: First-order transition with power-law singularity in models with absorbing states
abstract: We study one- and two-dimensional models which undergo a transition between active and absorbing phases. The transition point in these models is of a novel type: jump of the order parameter coincides with its power-law singularity. Some arguments supported by Monte Carlo simulations prompted us to predict the exact location of the transition point. Both models possess gaugelike symmetry.
authors.affiliation: Department of Physics, Adam Mickiewicz University, ulica Umultowska 85, 61-614 Poznan, Poland.
authors.initials: A
authors.lastname: Lipowski