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arXiv · hep-th/9302041

Comment on Gravity and the Poincare Group

Thomas Strobl
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Abstract

Following the approach of Grignani and Nardelli [1], we show how to cast the two-dimensional model $L \sim curv^2 + torsion^2 + cosm.const$ -- and in fact any theory of gravity -- into the form of a Poincare gauge theory. By means of the above example we then clarify the limitations of this approach: The diffeomorphism invariance of the action still leads to a nasty constraint algebra. Moreover, by simple changes of variables (e.g. in a path integral) one can reabsorb all the modifications of the original theory.

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Thomas Strobl. 1993-02-11. Comment on Gravity and the Poincare Group. https://doi.org/10.1103/physrevd.48.5029

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