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It has long been known that the covariant formulation of quantumelectrodynamics conflicts with the local description of states in the chargedsector. Some of the solutions to this problem amount to modifications of thesubsidiary conditions below some arbitrarily low photon frequency. Suchinfrared modified theories have been shown to be equivalent to standard Maxwellelectrodynamics with an additional classical electromagnetic current induced bythe quantum charges. The induced current only has support for very smallfrequencies and cancels the effects of the physical charges on large scales. Inthis work we explore the possibility that this de-electrification effect couldallow for the existence of isotropic charged cosmologies, thus evading thestringent limits on the electric charge asymmetry of the universe. We considera simple model of infrared-modified scalar electrodynamics in the cosmologicalcontext and find that the charged sector generates a new contribution to theenergy-momentum tensor whose dominant contribution at late times is acosmological constant-like term. If the charge asymmetry was generated duringinflation, the limits on the asymmetry parameter in order not to produce atoo-large cosmological constant are very stringent $\eta_Q <10^{-131}-10^{-144}$ for a number of e-folds $N=50-60$ in typical models. However if thecharge imbalance is produced after inflation, the limits are relaxed in such away that $\eta_Q<10^{-43}(100 \,\mbox{GeV}/T_Q)$, with $T_Q$ the temperature atwhich the asymmetry was generated. If the charge asymmetry has ever existed andthe associated electromagnetic fields vanish in the asymptotic future, thelimit can be further reduced to $\eta_Q<10^{-28}$.

Isotropic charged cosmologies in infrared-modified electrodynamics