“…If the nonminimal vector potential is invariant under charge conjugation, then, one can not discriminate the particle from its antiparticle [20]. Since the DKPe, unlike from KG and Proca equations, allows the nonminimal couplings, it is extensively examined by considering several Lorentz structures [2,7,15,23,51,53], and potential energies [6,37,38,40,58,59].…”