Abstract
Certain singularly perturbed partial differential equations exhibit a phenomenon known as dynamic metastability, whereby the solution evolves on an asymptotically exponentially long time interval as the singular perturbation parameter e tends to zero. This article illustrates a technique to analyze metastable behavior for a range of problems in multi-dimensional domains. The problems considered include the exit problem for diffusion in a potential well, models of interface propagation in materials science, an activator-inhibitor model in mathematical biology, and a flame-front problem. Many of these problems can be formulated in terms of non-local partial differential equations. This non-local feature is shown to be essential to the existence of metastable behavior.
This work was supported by NSERC grant 5-81541.
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Ward, M.J. (2001). Metastable dynamics and exponential asymptotics in multi-dimensional domains. In: Jones, C.K.R.T., Khibnik, A.I. (eds) Multiple-Time-Scale Dynamical Systems. The IMA Volumes in Mathematics and its Applications, vol 122. Springer, New York, NY. https://doi.org/10.1007/978-1-4613-0117-2_9
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DOI: https://doi.org/10.1007/978-1-4613-0117-2_9
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