Confining integro-differential equations originating from evolutionary biology: Ground states and long time dynamics

We consider nonlinear mutation selection models, known as replicator-mutator equations in evolutionary biology. They involve a nonlocal mutation kernel and a confining fitness potential. We prove that the long time behaviour of the Cauchy problem is determined by the principal eigenelement of the underlying linear operator. The novelties compared to the literature on these models are about the case of symmetric mutations: Université de Rouen Normandie, CNRS, Laboratoire de Mathématiques Raphaël Salem, Saint-Etiennedu-Rouvray, France & BioSP, INRAE, 84914, Avignon, France. E-mail: matthieu.alfaro@univ-rouen.fr Université Paris-Saclay, UVSQ, CNRS, Laboratoire de Mathématiques de Versailles, 78000 Versailles, France. Email: pierre.gabriel@uvsq.fr Université Paris-Saclay, UVSQ, CNRS, Laboratoire de Mathématiques de Versailles, 78000 Versailles, France. Email: otared.kavian@uvsq.fr

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