Gauge-free electromagnetic gyrokinetic theory

Publication date: Available online 23 April 2019Source: Physics Letters AAuthor(s): J.W. Burby, A.J. BrizardAbstractA new gauge-free electromagnetic gyrokinetic theory is developed, in which the gyrocenter equations of motion and the gyrocenter phase-space transformation are expressed in terms of the perturbed electromagnetic fields, instead of the usual perturbed potentials. Gyrocenter polarization and magnetization are derived explicitly from the gyrocenter Hamiltonian, up to first order in the gyrocenter perturbation expansion. Expressions for the sources in Maxwell's equations are derived in a form that is suitable for simulation studies, as well as kinetic-gyrokinetic hybrid modeling.

Source: Physics Letters A - April 25, 2019 Category: Physics Source Type: research