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Vacuum Energy?

  1. Feb 13, 2008 #1
    Could someone please explain to me what vacuum energy is and how energy can exist in a vacuum. Sorry if this is the wrong forum, seemed as far as I know to fit best =]
  2. jcsd
  3. Feb 15, 2008 #2


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    Science Advisor

    Very rough explanation:

    It seems to be come from the wave functions of all the stuff in the universe. Specifically everything has a non zero (although extremely small) probability of being anywhere. The vacuum energy is the sum of all this stuff.
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