The effect of an external electric field on the probability of the electron radiative transition from a resonant u-state to the localized $g-$state of the $D_2^{(-)}-$center in the presence of dissipative tunneling has been investigated in the model of zero-radius potential. It is shown that the probability of radiative transition increases by about two orders of magnitude in the case of the external electric field intensity for which the initially asymmetric double-well oscillator potential simulating a quantum-dot molecule becomes symmetrical.
$^1$Department of Theoretical Physics, Faculty of Physics, Moscow State University, Moscow, Russia
$^2$Department of Physics, Penza State University, Penza, Russia
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