Quote:
Originally Posted by g__day
If on a cosmic scale matter can be created and destoyed without apparently conserving energy or momentum, in finite spots for a finite time, then there is a different framework for studying cosmic expansion other than dark energy or dark matter (or perhaps offering a candidate for them).
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So the equivalence of matter and energy (E=mc^2) is bunk????
Quote:
Originally Posted by g__day
Hawking has showed its possible for matter or energy to jump from the cosmic foam (alah the world of the really tiny quantum mechanics that our universe appears to float in) and not necessarily spell doom and gloom. Hawkings initial postulate was a pair of virtual particles (pro and anti to conserve mass and energy) tunnel into our reality then immediately zap each other and annihilate... except if they appear near the event horizon of a black hole, so one escapes and one is sucked in. In this situation you've just added mass and energy to the Universe.
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I follow the argument but don't agree with the conclusion that matter and/or energy is added to the universe. Is not the black whole part of the universe? While the cosmic foam concept allows us to explain the average statistical behaviour observed at macros scales and reconcile it with quantum theory, each matter/antimatter pair is not serial numbered to only cancel with the partner it was created with.
If an antiparticle is annihalated inside a black hole the gravitational effect outside the black hole does not change (due to mass/energy equivalence).
Al.