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Encyclopedia > Proca action

In field theory, the Proca action describes a massive spin-1 field of mass m in Minkowski spacetime. The field involved is a real vector field A. The Lagrangian density is given by:

(+---) signature


The Euler-Lagrange equation is

which is equivalent to

and

The Proca action is the gauge-fixed version of the Stückelberg action via the Higgs mechanism.


  Results from FactBites:
 
Proca action (82 words)
In physics, in the area of field theory, the Proca action describes a massive spin-1 field of mass m in Minkowski spacetime.
In the dimensionless units commonly employed in theoretical physics, these may both be taken to be one.
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