Conjugate variables: Difference between revisions

Revision as of 07:12, 18 March 2020

Revision as of 13:52, 13 April 2020

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* The ''mass-moment'' ('''p'''''t''-''E'''''x''') of a particle is the derivative of its action with respect to its ''[[rapidity]]''.

* The ''[[electric potential]]'' (φ, [[voltage]]) at an event is the negative of the derivative of the action of the electromagnetic field with respect to the density of (free) ''[[electric charge]]'' at that event. {{citation needed|date=April 2013}}

* The ''[[Magnetic vector potential|magnetic potential]]'' ('''A''') at an event is the derivative of the action of the electromagnetic field with respect to the density of (free) ''[[electric current]]'' at that event. {{citation needed|date=April 2013}}

* The ''[[electric field]]'' ('''E''') at an event is the derivative of the action of the electromagnetic field with respect to the ''electric [[polarization density]]'' at that event. {{citation needed|date=April 2013}}

* The ''[[magnetic field|magnetic induction]]'' ('''B''') at an event is the derivative of the action of the electromagnetic field with respect to the ''[[magnetization]]'' at that event. {{citation needed|date=April 2013}}