Relativistic Quantum Measurements, Unruh effect and Black Holes

Details Relativistic Quantum Measurements, Unruh effect and Black Holes Relativistic Quantum Measurements, Unruh effect and Black Holes

1997-12-18

arxiv.org/abs/gr-qc/9712078v2

Theor.Math.Phys.115:542-553,1998; Teor.Mat.Fiz.115:215-232,1998

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

24 pages (Latex), 8 EPS figures The text was edited for the new version

Scientific paper

10.1007/BF02575454

It is shown how the technique of restricted path integrals (RPI) or quantum corridors (QC) may be applied for the analysis of relativistic measurements. Then this technique is used to clarify the physical nature of thermal effects as seen by an accelerated observer in Minkowski space-time (Unruh effect) and by a far observer in the field of a black hole (Hawking effect). The physical nature of the "thermal atmosphere" around the observer is analysed in three cases: a) the Unruh effect, b) an eternal (Kruskal) black hole and c) a black hole forming in the process of collapse. It is shown that thermal particles are real only in the case (c). In the case (b) they cannot be distinguished from real particles but they do not carry away mass of the black hole until some of these particles are absorbed by the far observer. In the case (a) thermal particles are virtual.

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