3 citations · 3 across the 1 of their papers we have counts for
3 papers
physics.plasm-ph2012★ 3 cited
Generalised action-angle coordinates defined on island chains
Robert L. Dewar, Stuart R. Hudson, Ashley M. Gibson
Straight-field-line coordinates are very useful for representing magnetic fields in toroidally confined plasmas, but fundamental problems arise regarding their definition in 3-D ge…
nlin.CD2011
Action-gradient-minimizing pseudo-orbits and almost-invariant tori
R. L. Dewar, S. R. Hudson, A. M. Gibson
Transport in near-integrable, but partially chaotic, degree-of-freedom Hamiltonian systems is blocked by invariant tori and is reduced at \emph{almost}-invariant tori, both…
physics.plasm-ph2010
Unified Theory of Ghost and Quadratic-Flux-Minimizing Surfaces
R. L. Dewar, S. R. Hudson, A. M. Gibson
A generalized Hamiltonian definition of ghost surfaces (surfaces defined by an action-gradient flow) is given and specialized to the usual Lagrangian definition. Numerical calculat…