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Results tagged with mp.mathematical-physics
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user 66513
Mathematical methods in classical mechanics, classical and quantum field theory, quantum mechanics, statistical mechanics, condensed matter, nuclear and atomic physics.
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votes
How would I apply Wick's theorem to the time-ordered product of three fields?
The case of three fields is given as:
\begin{equation} T\{\phi_1 \phi_2 \phi_3\}=N\{\phi_1 \phi_2 \phi_3\}+C\{\phi_1 \phi_2\}\phi_3 + C\{\phi_2 \phi_3\}\phi_1 + C\{\phi_1 \phi_3\}\phi_2\end{equation}
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