Ergodicity-breaking transition and high-frequency response in a simple free-energy landscape.
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.
Ignatiev
M
M
The Martin Fisher School of Physics, Brandeis University, Waltham, Massachusetts 02254, USA.
Chakraborty
B
B