Phys Rev Lett. 2010 May 21;104(20):205004. doi: 10.1103/PhysRevLett.104.205004. Epub 2010 May 20.
Physical review letters
M Sherlock
PMID: 20867035 DOI: 10.1103/PhysRevLett.104.205004
A generalized Ohm's law is derived for a system composed of a background magnetohydrodynamic plasma and a lower density relativistic charged-particle distribution. The interpretation of Ohmic electric fields occurring due to force balance breaks down for such a system and instead an approach based on Maxwell's equations along with the particle flux equations is necessary. Three additional terms arise in Ohm's law and each is verified numerically.