Entropy of neutrino field in Kerr-Newman-de Sitter space-time
2003
4 pages
Published in:
- Chin.Phys.Lett. 20 (2003) 618-621
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Abstract: (IOP)
By using the improved brick wall model, we regard the two null horizons in Kerr-Newman-de Sitter space-time as two independent thermal equilibrium systems and we calculate the entropies of both horizons due to neutrino field. We propose that the so-called ``superradiant'' modes cannot be considered because fermion fields does not display supperradiance. In fact, the nonsuperradiant part does exactly show the expected area-law entropy. Moreover, our cut-offε, which does not require an angular cut-off, is independent of angleθ.- space-time: Kerr-Newman
- space-time: de Sitter
- neutrino
- entropy
- horizon
- brick wall model
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