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Locality vs. Nonlocality

  1. Feb 18, 2005 #1
    Can someone explain the mathamatics behind locality and nonlocality?
     
  2. jcsd
  3. Feb 18, 2005 #2

    dextercioby

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    In what context...?You should have specified that.

    Daniel.
     
  4. Feb 18, 2005 #3
    I didn't know there were different context to it.
     
  5. Feb 18, 2005 #4

    dextercioby

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    In QFT,the locality is assured by a finite polynomial type of a Lagrangian density.For example,the density for the scalar field:

    [tex] \mathcal{L}(\varphi,\partial^{\mu}\varphi)=\exp [(\partial^{\mu}\varphi)(\partial_{\mu}\varphi)+\phi^{2}] [/tex]

    is said to break locality...

    Daniel.
     
  6. Feb 18, 2005 #5
    ummm...huh?
     
  7. Feb 18, 2005 #6

    dextercioby

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    What do you mean...?

    Daniel.
     
  8. Feb 21, 2005 #7
    Ok explain to me what velocity means to a nonlocalized tachyon
     
  9. Feb 21, 2005 #8

    dextercioby

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    What do you mean?"nonlocalized" ...does it refer to HUP...?Yes,in agreement with HUP,as the uncertainty in velocity/momentum goes to infinity,basically any particle could be tachyonic...

    Daniel.
     
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