title: Ergodicity-breaking transition and high-frequency response in a simple free-energy landscape.
abstract: We present a simple dynamical model described by a Langevin equation in a piecewise parabolic free-energy landscape, modulated by a temperature-dependent overall curvature. The zero-curvature point marks a transition to a phase with broken ergodicity. The frequency-dependent response near this transition is reminiscent of observations near the glass transition.
authors.affiliation: The Martin Fisher School of Physics, Brandeis University, Waltham, Massachusetts 02254, USA.
authors.forename: M
authors.initials: M
authors.lastname: Ignatiev
authors.forename: B
authors.initials: B
authors.lastname: Chakraborty