Proca action
= Proca action
{c}
{wiki}
The Proca action adds $m^2A_\mu A^\mu/2$ to the Maxwell Lagrangian. It describes a massive spin-one field and explicitly breaks the Abelian gauge symmetry of the massless theory.
= Proca action
{c}
{wiki}
The Proca action adds $m^2A_\mu A^\mu/2$ to the Maxwell Lagrangian. It describes a massive spin-one field and explicitly breaks the Abelian gauge symmetry of the massless theory.