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In this paper we analyze the interactions of a massive spin-2 particlescharged under both Abelian and non-Abelian group using the Porrati-RahmanLagrangian. This theory is valid up to an intrinsic cutoff scale.Phenomenologically a theory valid up to a cutoff scale is sensible as all knownhigher spin particles are non-fundamental and it is shown that indeed thisaction can be used to estimate some relevant cross section. Such actionnecessarily includes Stuckelberg field and therefore it is necessary to fix thecorresponding gauge symmetry. We show that this theory, when the Stuckelbergsymmetry is gauge-fixed, possesses a non-trivial infrared problem. A gaugefixing ambiguity arises which is akin to the Gribov problem in QCD in theAbelian case as well. In some cases (such as when the space-time is thefour-dimensional torus) the vacuum copies can be found analytically. A similarphenomenon also appears in the case of Proca fields. A very interesting featureof these copies is that they arise only for "large enough" gauge potentials.This opens the possibility to avoid the appearance of such gauge fixingambiguities by using a Gribov-Zwanziger like approach.

On infrared problems of effective Lagrangians of massive spin 2 fields coupled to gauge fields