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- W2963760686 abstract "In this paper we study the singular vanishing-viscosity limit of a gradient flow in a finite dimensional Euclidean space, focusing on the so-called delayed loss of stability of stationary solutions. We find a class of time-dependent energy functionals and initial conditions for which we can explici tly calculate the first discontinuity time t∗ of the limit. For our class of functionals, t∗ coincides with the blow-up time of the solutions of the linearized system around the equilibrium, and is in particular strictly greater than the time tc where strict local minimality with respect to the driving energy gets lost. Moreover, we show that, in a right neighborhood of t∗, rescaled solutions of the singularly perturbed problem converge to heteroclinic solutions of the gradient flow. Our results complement the previous ones by Zanini [Discrete Contin. Dyn. Syst. Ser. A 18 (2007), 657–675], where the situation we consider was excluded by assuming the so-called transversality conditions, and the limit evolution consisted of strict local minimizers of the energy up to a negligible set of times." @default.
- W2963760686 created "2019-07-30" @default.
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- W2963760686 date "2018-10-09" @default.
- W2963760686 modified "2023-10-16" @default.
- W2963760686 title "Delayed loss of stability in singularly perturbed finite-dimensional gradient flows" @default.
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- W2963760686 doi "https://doi.org/10.3233/asy-181475" @default.
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