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---
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title: Gauge fixing
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permalink: /Gauge_fixing/
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---
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# Gauge fixing
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[Category:Model](/Category:Model "wikilink") As explained in app. \[GaugeFixing\], the general form of a gauge fixing term in *R*<sub>*ξ*</sub>-gauge is
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As explained in app. \[GaugeFixing\], the general form of a gauge fixing term in R<sub>ξ</sub>-gauge is
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$\\label{gfstructure}
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\\mathscr{L}_{GF} = - \\frac{1}{2 R_\\xi} \\sum_a |f^a|^2$
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$` \mathscr{L}_{GF} = - \frac{1}{2 R_\xi} \sum_a |f^a|^2`$
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with some gauge fixing functions *f*<sup>*a*</sup>.
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