- #1
asheg
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"Random Phase Approximation" (Why they call it so?)
Hi,
I'm wondering that why the scientists call this phenomena in many body physics "Random Phase Approximation". (Why Random? Why Phase?) It seems that when we want calculate a correlation function in quantum field theory, it leads to calculation of 4-particle or 6-particle green's function and we use mean field theory to calculate it and nothing more. so why we should call it random phase approximation (Why Random? Why Phase?) .
Thank you.
Hi,
I'm wondering that why the scientists call this phenomena in many body physics "Random Phase Approximation". (Why Random? Why Phase?) It seems that when we want calculate a correlation function in quantum field theory, it leads to calculation of 4-particle or 6-particle green's function and we use mean field theory to calculate it and nothing more. so why we should call it random phase approximation (Why Random? Why Phase?) .
Thank you.