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In a transient magnetic field, heavy quarkonium bound states evolve nonadiabatically. In presence of a strong magnetic field, $J/\Psi$ and$\Upsilon(1S)$ become more tightly bound than we expected earlier for a purethermal medium. We have shown that in a time varying magnetic field, there is apossibility of moderate suppression of $J/\Psi$ through the non adiabatictransition to continuum where as the $\Upsilon(1S)$ is so tightly bound thatcan not be dissociated through this process. We have calculated thedissociation probabilities up to the first order in the time dependentperturbation theory for different values of initial magnetic field intensity.

Dissociation of heavy quarkonium states in rapidly varying strong magnetic field