Discrete breathers in hexagonal dusty plasma lattices

Vassilios Koukouloyannis, Ioannis Kourakis

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The occurrence of single-site or multisite localized vibrational modes, also called discrete breathers, in two-dimensional hexagonal dusty plasma lattices is investigated. The system is described by a Klein-Gordon hexagonal lattice characterized by a negative coupling parameter epsilon in account of its inverse dispersive behavior. A theoretical analysis is performed in order to establish the possibility of existence of single as well as three-site discrete breathers in such systems. The study is complemented by a numerical investigation based on experimentally provided potential forms. This investigation shows that a dusty plasma lattice can support single-site discrete breathers, while three-site in phase breathers could exist if specific conditions, about the intergrain interaction strength, would hold. On the other hand, out of phase and vortex three-site breathers cannot be supported since they are highly unstable.
Original languageEnglish
Article number026402
Pages (from-to)026402/1-10
Number of pages10
JournalPhysical Review E
Volume80
Issue number2
DOIs
Publication statusPublished - 10 Aug 2009

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Statistical and Nonlinear Physics
  • Statistics and Probability

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  • Cite this

    Koukouloyannis, V., & Kourakis, I. (2009). Discrete breathers in hexagonal dusty plasma lattices. Physical Review E, 80(2), 026402/1-10. [026402]. https://doi.org/10.1103/PhysRevE.80.026402