Entropy of Einstein-Maxwell dilaton axion black holes
2003
9 pages
Published in:
- Int.J.Theor.Phys. 42 (2003) 817-825
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Abstract: (Springer)
The entropy of Einstein—Maxwell-dilaton—axion black holes is calculated by using the improved brick-wall model. Taking into account of the statistical physics, we propose not to consider the superradiant modes. The result shows that the nonsuperradiant modes do contribute exactly the area-law entropy for extreme black hole. Moreover, our cut-off ε which does not require an angular cut-off δ is independent of angle θ. As for the extreme black hole, we found that its entropy is zero.- black hole: entropy
- Einstein-Maxwell equation
- axion
- dilaton
- brick wall model
- field theory: scalar
- Dirac equation
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