A phenomenological model for photon mass generation in vacuo

A phenomenological model is presented here arguing that photon mass is an induced effect rendered in the form of vacuum potential arising from vacuum natural modes. An elementary vacuum potential is defined as a function of vacuum zero-point fields, which yields an expression for effective photon mass generation. A Lagrangian is constructed for this model which incorporates photons with effective mass in vacuo. It is suggested that photons may acquire or present an effective mass while interactions with vacuum or other fields but they do not have an intrinsic rest mass. The photon mass emerges as a dynamical variable which depends on the coupling strength of electromagnetic fields to the vacuum natural modes and on the value of vector potential. Key words: Photon mass, Maxwell-Proca equations, vacuum potentials, Higgs potential.