Static forces and virtual-particle exchange: Difference between revisions

Revision as of 18:15, 18 August 2010

Revision as of 18:16, 18 August 2010

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where <math> \mathcal{L} [\varphi (x)] </math> is the [[Lagrangian]] density. We are using [[natural units]], <math> \hbar = c = 1 </math>.

Here, the [[spacetime]] metric is given by

:<math>\eta_{\mu\nu} = \begin{pmatrix}

1 & 0 & 0 & 0\\

0 & -1 & 0 & 0\\

0 & 0 & -1 & 0\\

0 & 0 & 0 & -1

\end{pmatrix}

.</math>

The path integral often can be converted to the form