Nonlinear coherent structures in granular crystals

C Chong, MA Porter, PG Kevrekidis… - Journal of Physics …, 2017 - iopscience.iop.org
The study of granular crystals, which are nonlinear metamaterials that consist of closely
packed arrays of particles that interact elastically, is a vibrant area of research that combines …

Nonlinear caging in all-bands-flat lattices

C Danieli, A Andreanov, T Mithun, S Flach - Physical Review B, 2021 - APS
We study the impact of classical short-range nonlinear interactions on transport in lattices
with no dispersion. The single-particle band structure of these lattices contains flat bands …

Wave packet spreading with disordered nonlinear discrete-time quantum walks

I Vakulchyk, MV Fistul, S Flach - Physical review letters, 2019 - APS
We use a novel unitary map toolbox—discrete-time quantum walks originally designed for
quantum computing—to implement ultrafast computer simulations of extremely slow …

Characteristics of chaos evolution in one-dimensional disordered nonlinear lattices

B Senyange, BM Manda, C Skokos - Physical Review E, 2018 - APS
We numerically investigate the characteristics of chaos evolution during wave-packet
spreading in two typical one-dimensional nonlinear disordered lattices: the Klein-Gordon …

Supratransmission in a disordered nonlinear periodic structure

B Yousefzadeh, AS Phani - Journal of Sound and Vibration, 2016 - Elsevier
We study the interaction among dispersion, nonlinearity, and disorder effects in the context
of wave transmission through a discrete periodic structure, subjected to continuous …

Superdiffusive transport and energy localization in disordered granular crystals

AJ Martínez, PG Kevrekidis, MA Porter - Physical Review E, 2016 - APS
We study the spreading of initially localized excitations in one-dimensional disordered
granular crystals. We thereby investigate localization phenomena in strongly nonlinear …

Wave-packet spreading in the disordered and nonlinear Su-Schrieffer-Heeger chain

BM Manda, V Achilleos, O Richoux, C Skokos… - Physical Review B, 2023 - APS
We numerically investigate the characteristics of the long-time dynamics of a single-site
wave-packet excitation in a disordered and nonlinear Su-Schrieffer-Heeger model. In the …

Identifying localized and spreading chaos in nonlinear disordered lattices by the Generalized Alignment Index (GALI) method

B Senyange, C Skokos - Physica D: Nonlinear Phenomena, 2022 - Elsevier
Abstract Implementing the Generalized Alignment Index (GALI) method of chaos detection
we investigate the dynamical behavior of the nonlinear disordered Klein–Gordon lattice …

Direct measurement of superdiffusive energy transport in disordered granular chains

E Kim, AJ Martínez, SE Phenisee, PG Kevrekidis… - Nature …, 2018 - nature.com
Energy transport properties in heterogeneous materials have attracted scientific interest for
more than half of a century, and they continue to offer fundamental and rich questions. One …

Energy transport in one-dimensional disordered granular solids

V Achilleos, G Theocharis, C Skokos - Physical Review E, 2016 - APS
We investigate the energy transport in one-dimensional disordered granular solids by
extensive numerical simulations. In particular, we consider the case of a polydisperse …