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In ultra-relativistic heavy-ion collisions, the strong electric field can beproduced by the colliding nuclei. The magnitude of the electric field $E$ is onthe order of $eE\sim m_{\pi}^2$ at the early stage of the collision. In quarkgluon plasma (QGP), such a strong electric field can have a significant impacton the evolution of charmonia. We employ the time-dependent Schr\"odingerequation to study the evolution of charmonium states in the strong electricfield generated by the moving charges. The electric field can result intransitions between charmonium states with different angular momenta. In orderto see this effect, we make comparisons between the yields of $ J/\psi$,$\psi'$ and $\chi_c$ with and without the electric field. The results show thatin the early stage of the collision the electric field induces significantdissociation of $J/\psi$. In the meantime, $\chi_c$ is generated via thetransition from $J/\psi$ by the electric field.

The effect of strong electric field on the evolution of charmonium in quark gluon plasma