Hawking radiation from spherically symmetrical gravitational collapse to an extremal R-N black hole for a charged scalar field

Details Hawking radiation from spherically symmetrical gravitational collapse to an extremal R-N black hole for a charged scalar field Hawking radiation from spherically symmetrical gravitational collapse to an extremal R-N black hole for a charged scalar field

2003-08-20

arxiv.org/abs/gr-qc/0308064v1

Commun.Theor.Phys. 41 (2004) 385-390

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

10 pages, 1 figure

Scientific paper

Sijie Gao has recently investigated Hawking radiation from spherically symmetrical gravitational collapse to an extremal R-N black hole for a real scalar field. Especially he estimated the upper bound for the expected number of particles in any wave packet belonging to $\mathcal{H}_{out}$ spontaneously produced from the state $|0>_{in}$, which confirms the traditional belief that extremal black holes do not radiate particles. Making some modifications, we demonstrate that the analysis can go through for a charged scalar field.

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