Gauge Dependence of Gravitational Correction to Running of Gauge Couplings

Abstract

Recently an interesting idea has been put forward by Robinson and Wilczek that incorporation of quantized gravity in the framework of abelian and nonabelian gauge theories results in a correction to the running of gauge coupling and, in consequence, to increase of the Grand Unification scale and to the asymptotic freedom. In this paper it is shown by explicit calculations that this correction depends on the choice of gauge.

4 pages, final version published in PRL with the note from Robinson and Wilczek added

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