@article{8510,
  abstract     = {In this paper, using the ideas of Bessi and Mather, we present a simple mechanical system exhibiting Arnold diffusion. This system of a particle in a small periodic potential can be also interpreted as ray propagation in a periodic optical medium with a near-constant index of refraction. Arnold diffusion in this context manifests itself as an arbitrary finite change of direction for nearly constant index of refraction.},
  author       = {Kaloshin, Vadim and Levi, Mark},
  issn         = {0273-0979},
  journal      = {Bulletin of the American Mathematical Society},
  keywords     = {Applied Mathematics, General Mathematics},
  number       = {3},
  pages        = {409--427},
  publisher    = {American Mathematical Society},
  title        = {{An example of Arnold diffusion for near-integrable Hamiltonians}},
  doi          = {10.1090/s0273-0979-08-01211-1},
  volume       = {45},
  year         = {2008},
}