On the derivation of Hawking radiation associated with the formation of a black hole. (English) Zbl 0692.53040

Fredenhagen, Klaus; Haag, Rudolf

Commun. Math. Phys. 127, No. 2, 273-284 (1990).

Summary: We show how in gravitational collapse the Hawking radiation at large times is precisely related to a scaling limit on the sphere where the star radius crosses the Schwarzschild radius (as long as the back reaction of the radiation on the metric is neglected). For a free quantum field it can be exactly evaluated and the result agrees with Hawking’s prediction. For a realistic quantum field theory no evaluation based on general principles seems possible. The outcoming radiation depends on the field theoretical model.

MSC:

53B50	Applications of local differential geometry to the sciences
83C75	Space-time singularities, cosmic censorship, etc.
81T20	Quantum field theory on curved space or space-time backgrounds

Keywords:

gravitational collapse; Hawking radiation

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