Symmetry breaking in two-dimensional square grids: persistence and failure of the dimensional crossover
Simone Dovetta,
Lorenzo Tentarelli
Abstract:We discuss the model robustness of the infinite two-dimensional square grid with respect to symmetry breakings due to the presence of defects, that is, lacks of finitely or infinitely many edges. Precisely, we study how these topological perturbations of the square grid affect the so-called dimensional crossover identified in [4]. Such a phenomenon has two evidences: the coexistence of the one and the two-dimensional Sobolev inequalities and the appearence of a continuum of L 2 -critical exponents for the grou… Show more
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