  In this paper, we investigate the massless Reissner-Nordstrom de Sitter
metric in the context of minimal length scenarios. We prove not only the
confinement of the energy density of massless charged particles, both fermions
and bosons, but also their ability to tunnel through the cosmological horizon.
These massless particles might be interacting with Dirac sea and in this case
they will appear outside the cosmological horizon in the context of dS/CFT
holography. This result may formulate a fundamental reason for the expansion of
the Dirac sea. Therefore, a spacetime Big Crunch may occur.
