GARIBALDI, Eduardo; PETITE, Samuel; THIEULLEN, Philippe

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GARIBALDI, Eduardo
Instituto de Matemática, Estatística e Computação Científica [Brésil] [IMECC]

PETITE, Samuel
Laboratoire Amiénois de Mathématique Fondamentale et Appliquée [LAMFA]

THIEULLEN, Philippe
Institut de Mathématiques de Bordeaux [IMB]

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The Frenkel-Kontorova model describes how an infinite chain of atoms minimizes the total energy of the system when the energy takes into account the interaction of nearest neighbors as well as the interaction with an exterior environment. An almost-periodic environment leads to consider a family of interaction energies which is stationary with respect to a minimal topological dynamical system. We introduce, in this context, the notion of calibrated configuration (stronger than the standard minimizing condition) and, for continuous superlinear interaction energies, we show the existence of these configurations for some environment of the dynamical system. Furthermore, in one dimension, we give sufficient conditions on the family of interaction energies to ensure, for any environment, the existence of calibrated configurations when the underlying dynamics is uniquely ergodic. The main mathematical tools for this study are developed in the frameworks of discrete weak KAM theory, Aubry-Mather theory and spaces of Delone sets< Leer menos

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almost-periodic environment

Aubry-Mather theory

calibrated configuration

Delone set

Frenkel-Kontorova model

Mañé potential

Mather set

minimizing holonomic probability

weak KAM theory

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Calibrated configurations for Frenkel-Kontorova type models in almost-periodic environments

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