No New Quantum Thermal Effect of Dirac Particles in a Charged Vaidya - de Sitter Black Hole
Abstract
It is shown that Hawking radiation of Dirac particles does not exist for P1, Q2 components but for P2, Q1 components in a charged Vaidya - de Sitter black hole. Both the location and the temperature of the event horizon change with time. The thermal radiation spectrum of Dirac particles is the same as that of Klein-Gordon particles. Our result demonstrates that there is no new quantum effect in the thermal radiation of Dirac particles in any spherically symmetry black holes.
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