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We study the Schwinger process in a uniform non-Abelian electric field usinga dynamical approach in which we evolve an initial quantum state for gluonicexcitations. We evaluate the spectral energy density and number density in theexcitations as functions of time. The total energy density has an ultravioletdivergence which we argue gets tamed due to asymptotic freedom, leading to$g^4E^4t^4$ growth, where $g$ is the coupling and $E$ the electric fieldstrength. We also find an infrared divergence in the number density ofexcitations whose resolution requires an effect such as confinement.

Instability of a uniform electric field in pure non-Abelian Yang-Mills theory