69 citations · 163 across the 7 of their papers we have counts for
7 papers
A class of three-dimensional gyroviscous magnetohydrodynamic models
Manasvi Lingam, Philip J. Morrison, Alexander Wurm
A Hamiltonian and action principle formalism for deriving three-dimensional gyroviscous magnetohydrodynamic models is presented. The uniqueness of the approach in constructing the…
Action Principles for Extended MHD Models
I. Keramidas Charidakos, M. Lingam, P. J. Morrison +2
The general, non-dissipative, two-fluid model in plasma physics is Hamiltonian, but this property is sometimes lost or obscured in the process of deriving simplified (or reduced) t…
On a new fixed point of the renormalization group operator for area-preserving maps
K. Fuchss, A. Wurm, P. J. Morrison
The breakup of the shearless invariant torus with winding number is studied numerically using Greene's residue criterion in the standard nontwist map. The residue be…
Breakup of Shearless Meanders and "Outer" Tori in the Standard Nontwist Map
K. Fuchss, A. Wurm, A. Apte +1
The breakup of shearless invariant tori with winding number (in continued fraction representation) of the standard nontwist map is studied numerically using Gr…
Meanders and Reconnection-Collision Sequences in the Standard Nontwist Map
A. Wurm, A. Apte, K. Fuchss +1
New global periodic orbit collision/separatrix reconnection scenarios in the standard nontwist map in different regions of parameter space are described in detail, including exact…
Fourier Transforms of Lorentz Invariant Functions
Alexander Wurm, Nurit Krausz, Cecile DeWitt-Morette +1
Fourier transforms of Lorentz invariant functions in Minkowski space, with support on both the timelike and the spacelike domains are performed by means of direct integration. The…