asbestosman wrote:I don't think Tarski is likely to be in error here, but if TAO were to back up his assertions properly, perhaps it could work. Pointing to Kip Thorne is a good start (even if Kip is an exmormon ;) ), but TAO still needs to demonstrate that he has a sufficient grasp of what Kip Thorne was saying in this instance. I don't know enough about the technical use of what constitutes existence / nonexistence of virtual particle vs other particles so I could not say. If TAO explains this, then maybe Tarski would concede the point if indeed it turns out to be relevant.
Well I'll give a summary... it's on page 439-441 if you want to look at it yourself if you buy the book... basically it says:
-All ways to picture black hole evaporation use vacuum fluctuations
-Vacuum Fluctuations can be considered both a wave and a particle, for this instance, we use particle
-The particle aspect of vaccum waves is embodied in the concept of virtual particles (flash into existence in pairs, live on energy from nearby space, than annihilate and redistribute the energy)
-Virtual photons cannot seperate by more than one wavelength generally (if they aren't more than that distance, they aren't considered "real particles" by physicists)
-A black holes tidal gravity forces the particles apart (one of the few forces which can do so)
-Energy fed into one, feeds the whole system; as a pair forms on the horizon, one falls into the hole, giving the other the energy to escape.
-Once they distance, they become "real", and are not linked anymore, the one takes away some of the energy away from the black hole because of the tidal gravity. Thus, the black hole loses mass and shrinks.
-The distance the particles have to separate is 1/4 of the hole's circumference - the distance changes depending on the hole
-A black hole with mass 2X the sun has a circ. of about 35kms. The particles would be able to get 9km apart without becoming "real".
-Unless the photon escapes, there is no detection of this particle, thus why it is 'imaginary' and not 'real' - if it doesn't escape, we will never know it existed. Thus 'imaginary', and not 'real'. It has to escape the black hole in order to 'exist' in our eyes, because if it doesn't, there is no evidence it ever existed.-Not all virtual particles escape, despite their companion falling into the hole.