Gauge and parametrization dependence in higher derivative quantum gravity

TL;DR

This paper investigates how gauge choices and parametrization affect the structure of counterterms in higher derivative quantum gravity, providing explicit two-loop calculations to demonstrate these dependencies.

Contribution

It reveals the nontrivial dependence of charges on gauge and parametrization in higher derivative quantum gravity and performs explicit two-loop calculations to confirm this.

Findings

Counterterms depend on gauge and parametrization choices

Two-loop contributions show consistent dependence on these parameters

Generalized renormalization group method confirms results

Abstract

The structure of counterterms in higher derivative quantum gravity is reexamined. Nontrivial dependence of charges on the gauge and parametrization is established. Explicit calculations of two-loop contributions are carried out with the help of the generalized renormgroup method demonstrating consistency of the results obtained.