On the renormalization of higher derivative two dimensional gravity.

Details On the renormalization of higher derivative two dimensional gravity. On the renormalization of higher derivative two dimensional gravity.

1995-01-26

arxiv.org/abs/hep-th/9501121v2

Physics

High Energy Physics

High Energy Physics - Theory

7 pages, latex, no figures. Replacement. The analysis is essentially modified as compared with the first version.

Scientific paper

The fourth derivative models for two dimensional gravity are shown to be equivalent to the special version of the nonlinear sigma models coupled to 2d quantum gravity. The reduction consists in the introduction of the auxiliary scalar fields and can be performed in an explicit way for both metric and general metric-dilaton cases. In view of this we can evaluate the structure of possible counterterms and show that they contains second derivative structures only. The calculations in the theory with an auxiliary fields require some special procedure to be applied. We perform the explicit calculations in a different gauges and explore the features of the auxiliary fields.

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