Hawking radiation of Dirac particles via tunnelling from rotating black holes in de Sitter spaces

摘要

Hawking radiation from black hole horizon can be viewed as a quantumtunnelling process, and fermions via tunnelling can successfully recoverHawking temperature. In this paper, considering the tunnelling particles withspin 1/2 (namely, Dirac particles), we further improve Kerner and Man's fermiontunnelling method to study Hawking radiation via tunnelling from rotating blackholes in de Sitter spaces, specifically including that from Kerr de Sitterblack hole and Kerr-Newman de Sitter black hole. As a result, Hawkingtemperatures at the event horizon (EH) and the cosmological horizon (CH) arewell described via Dirac particles tunnelling.