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Energy and Momentum

  1. Nov 29, 2006 #1
    Gentlemen,

    I see where there is a relationship between energy and momentum in

    [tex]E=\frac{p^2}{2m}[/tex]

    Ok. And I also see where there is a different relationship between energy and momentum in

    [tex]E^2 = p^2c^2 + (m_{0}c^2)^2[/tex]

    fine. So there must be some abstract concept where E=E(p) in general. What is that concept called? And what do I search on to learn about it?
     
  2. jcsd
  3. Nov 29, 2006 #2

    vanesch

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    Gold Member

    "dispersion relation"
     
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