In physics, specifically field theory and particle physics, the Proca action describes a massive spin-1 field of mass m in Minkowski spacetime. The corresponding equation is a relativistic wave equation called the Proca equation. The Proca action and equation are named after Romanian physicist Alexandru Proca.
This article uses the (+−−−) metric signature and tensor index notation in the language of 4-vectors.
Read more about Proca Action: Lagrangian Density, Equation, Gauge Fixing
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