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Negative Energy And Hawking Radiation

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Posted by Russell Curtis on October 6, 2004 05:21:01 UTC

I do not understand the concept of negative energy in referenbce to Hawking Radiation for Black Holes.

I understand that the radiation is a result of pair production of virtual particles (one matter and the other anti-matter). The anti particle is supposed to be captured by the Black Hole while the other escapes. The escaped particle is the radiation. However the captured particle is supposed to have "negative" energy and so reduce the mass (via E=mc squared)of the Black Hole. However my understanding of an anti-matter is that it has positive energy.

Can some one please explain?

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