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touqra
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What is Black Hole Complementarity?
hellfire said:I think I can tell you what it is, but I cannot tell you what the consequences are. The principle is based on the fact that Hawking radiation arises from the different definitions of particles and vacuum for a freely falling observer and for a locally accelerated observer located at a constant radius from the black hole. The observer at a constant radius perceives the black hole exerting a thermal radiation (Hawking radiation) and he can consider the black hole to be at a specific temperature. He also observers matter falling into the black hole. The freely falling observer just crosses the horizon towards the singularity without measuring anything of that. Black hole complementarity means an equivalence of both descriptions. Now, regarding consequences, note that this is not just like two different descriptions from two different coordinate systems, because a horizon exists which breaks any possible correlation between events inside and outside the black hole. May be someone can tell us more about this.
hellfire said:Unruh radiation is not a gravitational effect. An observer at a fixed position in Schwarzschild spacetime would detect Hawking radiation.
Yes. Because of the principle of equivalence.selfAdjoint said:Um, aren't they really the same thing when you come right down to it? Accelerated observer in a relativistic quantum vacuum?
Black Hole Complementarity is a concept in theoretical physics that suggests that seemingly contradictory descriptions of a black hole can both be true from different perspectives. It proposes that an observer outside the black hole and an observer falling into the black hole can have different descriptions of the same events, and both are equally valid.
The information paradox is the puzzle of what happens to information that falls into a black hole. Black Hole Complementarity attempts to resolve this paradox by suggesting that the information is encoded on the event horizon of the black hole and can be seen by an observer outside the black hole, while an observer falling into the black hole would not be able to see it.
There is currently no direct evidence that supports Black Hole Complementarity, as it is a theoretical concept. However, it is consistent with other established theories such as general relativity and quantum mechanics.
Yes, there are several alternative theories that attempt to explain the information paradox, such as the firewall hypothesis and the fuzzball theory. These theories have different interpretations of what happens to information that falls into a black hole.
Black Hole Complementarity challenges our current understanding of physics by suggesting that seemingly contradictory descriptions can both be true. It also raises questions about the nature of space, time, and information. Further research and experiments are needed to fully understand the implications of this concept.