Gravity and Yang-Mills theory

Details Gravity and Yang-Mills theory Gravity and Yang-Mills theory

2010-11-15

arxiv.org/abs/1011.3287v1

Int.J.Mod.Phys.D19:2379-2384, 2010

Physics

High Energy Physics

High Energy Physics - Theory

6 pages, based on contribution to GRF 2010, to appear in a special edition of IJMPD

Scientific paper

10.1142/S0218271810018281

Three of the four forces of Nature are described by quantum Yang-Mills theories with remarkable precision. The fourth force, gravity, is described classically by the Einstein-Hilbert theory. There appears to be an inherent incompatibility between quantum mechanics and the Einstein-Hilbert theory which prevents us from developing a consistent quantum theory of gravity. The Einstein-Hilbert theory is therefore believed to differ greatly from Yang-Mills theory (which does have a sensible quantum mechanical description). It is therefore very surprising that these two theories actually share close perturbative ties. This article focuses on these ties between Yang-Mills theory and the Einstein-Hilbert theory. We discuss the origin of these ties and their implications for a quantum theory of gravity.

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