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physics.plasm-ph2008
On the application of Maxwell's theory to many-body systems, or why the resistive magnetohydrodynamic equations are not closed
Robert W. Johnson
The resistive magnetohydrodynamic (MHD) equations as usually defined in the quasineutral approximation refer to a system of 14 scalar equations in 14 scalar variables, hence are de…
physics.plasm-ph2008
On "the plasma approximation"
Robert W. Johnson
``The plasma approximation'' is, in the words of Pauli, ``not even wrong,'' as it expresses a disbelief in the symmetries of the underlying gauge field theory. The electrostatic fi…
physics.plasm-ph2008
Currents in a Tokamak
Robert W. Johnson
A self-consistent analysis of the currents in a tokamak yields the result that the parallel neutralizing current is given simply by the sum of currents commonly called the bootstra…