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Comments on ``A note on first-order formalism and odd-derivative actions'' by S. Deser

N. Kiriushcheva·S. V. Kuzmin
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Abstract

We argue that the obstacles to having a first-order formalism for odd-derivative actions presented in a pedagogical note by Deser are based on examples which are not first-order forms of the original actions. The general derivation of an equivalent first-order form of the original second-order action is illustrated using the example of topologically massive electrodynamics (TME). The correct first-order formulations of the TME model keep intact the gauge invariance presented in its second-order form demonstrating that the gauge invariance is not lost in the Ostrogradsky process.

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N. Kiriushcheva, S. V. Kuzmin. 2006-08-28. Comments on ``A note on first-order formalism and odd-derivative actions'' by S. Deser. https://doi.org/10.1088/0264-9381%2F24%2F5%2Fn01

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