Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Vacuum fluctuations and QM

  1. Oct 10, 2011 #1
    How are internal lines with no free ends of Feynman diagrams of the perturbative expansion of QFT related to the quantum tunnelling barrier's negative kinetic energy and the HUP of QM? (if they are related at all)
     
  2. jcsd
  3. Oct 11, 2011 #2
    Not a clue anyone?
    Maybe quantum tunnelling is considered not mainstream?
     
  4. Oct 11, 2011 #3

    tom.stoer

    User Avatar
    Science Advisor

    Good question.

    I have to look for a paper from Jaffe which explains that vacuum bubble diagrams (w/o external lines) for the Casimir effect are an "effective limit" of standard 1st order diagrams with external lines for van-der-Waals forces. If this reasoning could be used in general than vacuum bubbles might be irrelevant.
     
  5. Oct 11, 2011 #4
    In fact my question wasn't restricted to vacuum bubbles diagrams, I was referring to virtual particles in general.
    Vacuum bubbles are irrelevant (cancel) when calculating correlation functions.
     
  6. Oct 11, 2011 #5
    You mean http://arxiv.org/abs/hep-th/0503158" [Broken]?
     
    Last edited by a moderator: May 5, 2017
  7. Oct 11, 2011 #6

    tom.stoer

    User Avatar
    Science Advisor

    exactly, thanks!
     
    Last edited by a moderator: May 5, 2017
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Vacuum fluctuations and QM
  1. Vacuum fluctuation (Replies: 37)

  2. Vacuum fluctuations (Replies: 8)

  3. Vacuum fluctuation (Replies: 8)

  4. Vacuum fluctuations (Replies: 3)

  5. Vacuum Fluctuations (Replies: 7)

Loading...