Asymmetry of Hawking Radiation of Dirac Particles in a Charged Vaidya - de Sitter Black Hole

摘要

The Hawking radiation of Dirac particles in a charged Vaidya - de Sitterblack hole is investigated by using the method of generalized tortoisecoordinate transformation. It is shown that the Hawking radiation of Diracparticles does not exist for $P_1, Q_2$ components, but for $P_2, Q_1$components it does. Both the location and the temperature of the event horizonchange with time. The thermal radiation spectrum of Dirac particles is the sameas that of Klein-Gordon particles.