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Any guidance would be appreciated. Thanks!

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- Thread starter wil3
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- #1

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Any guidance would be appreciated. Thanks!

- #2

haushofer

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[tex]

S[\phi] = \int d^4 x L

[/tex]

For general coordinate transformations the measure is NOT invariant, and you would obtain the action

[tex]

S[\phi] = \int \sqrt{|g|}d^4 x L

[/tex]

The squareroot becomes 1 for the Minkowski metric.

The gamma is part of the Lorentz transformation itself, NOT of the corresponding Jacobian.

- #3

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For a relatively lowbrow discussion, see p. 629 of this book: http://www.lightandmatter.com/lm.pdf

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