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- Tim R. Morris
- STAG Research Centre & Department of Physics and Astronomy, University of Southampton, Highfield, Southampton, SO17 1BJ, UK
書誌事項
- 公開日
- 2018-10
- DOI
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- 10.1142/s021827181847003x
- 公開者
- World Scientific Pub Co Pte Ltd
この論文をさがす
説明
<jats:p> The Wilsonian renormalization group (RG) requires Euclidean signature. The conformal factor of the metric then has a wrong-sign kinetic term, which has a profound effect on its RG properties. In particular, around the Gaussian fixed point, it supports a Hilbert space of renormalizable interactions involving arbitrarily high powers of the gravitational fluctuations. These interactions are characterized by being exponentially suppressed for large field amplitude, perturbative in Newton’s constant but nonperturbative in Planck’s constant. By taking a limit to the boundary of the Hilbert space, diffeomorphism invariance is recovered whilst retaining renormalizability. Thus the so-called conformal factor instability points the way to constructing a perturbatively renormalizable theory of quantum gravity. </jats:p>
収録刊行物
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- International Journal of Modern Physics D
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International Journal of Modern Physics D 27 (14), 1847003-, 2018-10
World Scientific Pub Co Pte Ltd
