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

Why do we not call the effective potential(QFT) being density of effective action?

  1. Aug 25, 2011 #1
    Please teach me this:
    Why do we not call V[itex]_{eff}[/itex]=[itex]\Gamma_{eff}[/itex]/VT (where [itex]\Gamma[/itex][itex]_{eff}[/itex] is the effective action, VT is spacetime volume) being density of effective action of field?
    Thank you very much in advance.
     
  2. jcsd
  3. Aug 29, 2011 #2
    Re: Why do we not call the effective potential(QFT) being density of effective action

    I have just known(from Schoeder's QFT book) that V[itex]_{eff}[/itex]=v[itex]_{0}[/itex]([itex]\Phi[/itex][itex]_{cl}[/itex])[itex]\Phi[/itex][itex]^{4}_{cl}[/itex].Then this must be called effective potential,because it relates with interaction Phi-4(this case is an example) but must not be called density of action.Is that correct?
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Why do we not call the effective potential(QFT) being density of effective action?
  1. Effective Potential (Replies: 2)

  2. Effective action (Replies: 1)

Loading...