title: Ergodic-nonergodic transition in a threshold system with feedback.
abstract: A threshold system with feedback is studied from the viewpoint of an ergodic-nonergodic transition, a kind of nonequilibrium phase transition, as the rate of input signal variation is changed. By discussing the time evolution of the distribution function, instead of its lowest moment (an order parameter), we can determine the transition point and make clear the role and limitation of the self-consistent equation for the order parameter. Finally the feedback strength is related to an activation energy from a statistical mechanical viewpoint.
authors.affiliation: Department of Applied Mathematics and Physics, Graduate School of Informatics, Kyoto University, Kyoto 606-8501, Japan. byseo@amp.i.kyoto-u.c.jp
authors.forename: Boyoung
authors.initials: B
authors.lastname: Seo
authors.forename: Toyonori
authors.initials: T
authors.lastname: Munakata