Editing Proca action (section)

{{Short description|Action of a massive abelian gauge field}}
{{Quantum field theory|cTopic=Equations}}

In [[physics]], specifically [[field theory (physics)|field theory]] and [[particle physics]], the '''Proca action''' describes a [[mass]]ive [[Spin (physics)|spin]]-1 [[quantum field|field]] of mass ''m'' in [[Minkowski spacetime]]. The corresponding equation is a [[relativistic wave equation]] called the '''Proca equation'''.<ref>Particle Physics (2nd Edition), B.R. Martin, G. Shaw, Manchester Physics, John Wiley & Sons, 2008, {{ISBN|978-0-470-03294-7}}</ref> The Proca action and equation are named after Romanian physicist [[Alexandru Proca]].

The Proca equation is involved in the [[Standard Model]] and describes there the three massive [[vector boson]]s, i.e. the Z and W bosons.

This article uses the (+−−−) [[metric signature]] and [[tensor index notation]] in the language of [[4-vector]]s.