Related Experiment Video
Updated: Aug 11, 2026

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
Published on: June 7, 2018
Signatures of noise-enhanced stability in metastable states
A Fiasconaro1, B Spagnolo, S Boccaletti
1Dipartimento di Fisica e Tecnologie Relative and INFM-CNR, Group of Interdisciplinary Physics, Università di Palermo, Viale delle Scienze pad. 18, I-90128 Palermo, Italy. afiasconaro@gip.dft.unipa.it
Abstract:
The lifetime of a metastable state in the transient dynamics of an overdamped Brownian particle is analyzed, both in terms of the mean first passage time and by means of the mean growth rate coefficient. Both quantities feature nonmonotonic behaviors as a function of the noise intensity, and are independent signatures of the noise enhanced stability effect. They can therefore be alternatively used to evaluate and estimate the presence of this phenomenon, which characterizes metastability in nonlinear physical systems.
Related Concept Videos
Stability of Equilibrium Configuration
A stable equilibrium occurs when a system tends to return to its original position when given a small displacement, and the potential energy is at its minimum. An example of a stable equilibrium is when a cantilever beam is fixed at one end and a weight is attached to the other end. If the weight...
Atomic Nuclei: Nuclear Relaxation Processes
Nuclear Stability
To hold positively charged protons together in the...
Atomic Nuclei: Nuclear Spin State Population Distribution
Stability
The stability of an LTI system is determined by the roots of its characteristic equation, known as poles. A system is stable if it produces a bounded...
¹H NMR: Interpreting Distorted and Overlapping Signals
As Δν decreases and the signals move closer, the doublets appear increasingly distorted. The intensities of the inner lines increase at the cost of those of the outer lines as the signals are slanted or...
