Scattering of Fermions off Dilaton Black Holes

Details Scattering of Fermions off Dilaton Black Holes Scattering of Fermions off Dilaton Black Holes

1994-03-30

arxiv.org/abs/gr-qc/9403060v2

Class.Quant.Grav.11:2435-2442,1994

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

12, Oslo-TP-4-94, USITP-94-5

Scientific paper

10.1088/0264-9381/11/10/005

We discuss how various properties of dilaton black holes depend on the dilaton coupling constant $a$. In particular we investigate the $a$-dependence of certain mass parameters both outside and in the extremal limit and discuss their relation to thermodynamical quantities. To further illuminate the role of the coupling constant $a$ we look at a massless point particle in a dilaton black hole geometry as well as the scattering of (neutral) fermions. In this latter case we find that the scattering potential vanishes for the zero angular momentum mode which seems to indicate a catastrophic deradiation when $a>1$.

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