Massless Charged Particles Tunneling Radiation from a RN-dS Horizon and the Linear and Quadratic GUP

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.
Comment: v1: 15 pages, TeX, 36 figures; v2: some clarifications added, no change in physics, to appear in Annals of Physics