  We investigate the vacuum instability in the presence of dilaton field in a
holographic set up. Although the dilaton is a bulk field, it leads to the
vacuum instability on the boundary. We show that the whole process crucially
depends on the probe brane position and as well on the radial coordinate. So
that the effects of dilaton scale parameter in different regions of the bulk or
for different probe brane positions are different. We also observe that in our
study the temperature can strengthen the effect of scale parameter in reducing
the potential barrier. Finally, we show that this Schwinger-like effect,
although is interesting by itself, does not produce a considerable pair
production rate.

High Energy Physics - Theory