Anisotropic model of kinetic roughening: he strong-coupling regime

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Abstract

We study the strong coupling (SC) limit of the anisotropic Kardar-Parisi-Zhang (KPZ) model. A systematic mapping of the continuum model to its lattice equivalent shows that in the SC limit, anisotropic perturbations destroy all spatial correlations but retain a temporal scaling which shows a remarkable crossover along one of the two spatial directions, the choice of direction depending on the relative strength of anisotropicity. The results agree with exact numerics and are expected to settle the long-standing SC problem of a KPZ model in the infinite range limit. © 2007 The American Physical Society.
Original languageEnglish
Article number050103
Number of pages4
JournalPhysical Review E
Volume76
Issue number5
DOIs
Publication statusPublished - 27 Nov 2007

Keywords

  • anisotropy
  • continuum mechanics
  • crystal lattices
  • numerical analysis
  • perturbation techniques
  • anisotropic Kardar-Parisi-Zhang (KPZ) model
  • strong coupling (SC) regime
  • temporal scaling
  • surface roughness

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