Temperature-Transformed “Minimal Coupling”: Magnetofluid Unification

The dynamics of a relativistic, hot charged fluid is expressed in terms of a hybrid magnetofluid field which unifies the electromagnetic field with an appropriately defined but analogous flow field. The unification is affected by a well-defined prescription that allows the derivation of the equations of motion of a plasma embedded in an electromagnetic field from the field-free equations. The relationship of this prescription with the minimal coupling prescription of particle dynamics is discussed; the changes brought about by the plasma temperature are highlighted. A few consequences of the unification are worked out.