Discussion Overview
The discussion centers on the relationship between redshift, time dilation, and Hawking radiation emitted by micro black holes. Participants explore the implications of these phenomena for observers at varying distances from the black hole, particularly in the context of quantum processes and the nature of emitted radiation.
Discussion Character
- Exploratory
- Technical explanation
- Conceptual clarification
- Debate/contested
Main Points Raised
- One participant suggests that extreme redshifting and time dilation should occur for Hawking radiation emitted close to the event horizon, questioning how this affects observations from a distance.
- Another participant emphasizes the quantum nature of Hawking radiation, arguing that it should not be viewed purely mechanistically and that the radiation is a global effect rather than localized at the event horizon.
- A participant acknowledges that if the wavelength of emitted particles is comparable to the size of the black hole, the anticipated redshift may be less significant than initially thought, but still questions whether some redshift occurs as photons escape the gravitational influence of the black hole.
- There is a request for calculations regarding the redshift of Hawking radiation as photons climb out of the gravity well.
- One participant states that Hawking radiation is already expressed for an asymptotic observer, implying that no additional redshift should be considered.
Areas of Agreement / Disagreement
Participants express differing views on the significance of redshift in the context of Hawking radiation and whether it should be considered for distant observers. The discussion remains unresolved regarding the extent and implications of redshift and time dilation in this context.
Contextual Notes
Participants note the complexity of the phenomena involved, including the dependence on quantum mechanics and the definitions of terms like "thermal bath" and "global effect." There are unresolved questions about the calculations related to redshift and the comparison between Unruh radiation and Hawking radiation.