|MadSci Network: Physics|
In an aswer to a previous question about hawking radiation, Ben Monreal writes "Empty space is full of virtual particle/antiparticle pairs; each pair has positive energy (...) Either the particle or the antiparticle gets sucked in, and the other one escapes with positive energy." But in "A Brief History of Time" Hawking clearly mentions the existence of negative energy particles (chapter 7). I assume Hawking knows best. However, he does not explain why it is only the positive energy particle that can escape the black hole.
Re: Why is it impossible for a particule with a negative energy to escape a BH?
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