Browsing Mathematics, Statistics & Physics by Author "Penati T."
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On the nonexistence of degenerate phase-shift discrete solitons in a dNLS nonlocal lattice
Penati T.; Sansottera M.; Paleari S.; Koukouloyannis V.; Kevrekidis P.G. ( Elsevier B.V. , 2018 , Article)We consider a one-dimensional discrete nonlinear Schrdinger (dNLS) model featuring interactions beyond nearest neighbors. We are interested in the existence (or nonexistence) of phase-shift discrete solitons, which correspond ... -
On the nonexistence of degenerate phase-shift multibreathers in Klein–Gordon models with interactions beyond nearest neighbors
Penati T.; Koukouloyannis V.; Sansottera M.; Kevrekidis P.G.; Paleari S. ( Elsevier B.V. , 2019 , Article)In this work, we study the existence of, low amplitude, phase-shift multibreathers for small values of the linear coupling in Klein–Gordon chains with interactions beyond the classical nearest-neighbor (NN) ones. In the ...