Dirac particles tunneling from black holes with topological defects. (English) Zbl 1381.83081
Summary: We study Hawking radiation of Dirac particles with spin-1/2 as a tunneling process from Schwarzschild-de Sitter and Reissner-Nordström-de Sitter black holes in background spacetimes with a spinning cosmic string and a global monopole. Solving Dirac’s equation by employing the Hamilton-Jacobi method and WKB approximation we find the corresponding tunneling probabilities and the Hawking temperature. Furthermore, we show that the Hawking temperature of those black holes remains unchanged in presence of topological defects in both cases.
MSC:
83C60 | Spinor and twistor methods in general relativity and gravitational theory; Newman-Penrose formalism |
81Q20 | Semiclassical techniques, including WKB and Maslov methods applied to problems in quantum theory |
54F65 | Topological characterizations of particular spaces |
83C40 | Gravitational energy and conservation laws; groups of motions |
83C57 | Black holes |
83C47 | Methods of quantum field theory in general relativity and gravitational theory |
81T20 | Quantum field theory on curved space or space-time backgrounds |
83C10 | Equations of motion in general relativity and gravitational theory |
70H20 | Hamilton-Jacobi equations in mechanics |
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