Static forces and virtual-particle exchange: Difference between revisions

Revision as of 17:04, 4 May 2015

Revision as of 22:15, 5 August 2015

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:<math>\mathcal{S} [\varphi] = \int \mathrm{d}^4x\; {\mathcal{L} [\varphi (x)]\,} </math>

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

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