On the Ultraviolet Behaviour of Newton's constant

Details On the Ultraviolet Behaviour of Newton's constant On the Ultraviolet Behaviour of Newton's constant

2004-01-12

arxiv.org/abs/hep-th/0401071v2

Class.Quant.Grav. 21 (2004) 5035-5041

Physics

High Energy Physics

High Energy Physics - Theory

8 pages; CQG class; minor changes and rearrangements

Scientific paper

10.1088/0264-9381/21/22/002

We clarify a point concerning the ultraviolet behaviour of the Quantum Field Theory of gravity, under the assumption of the existence of an ultraviolet Fixed Point. We explain why Newton's constant should to scale like the inverse of the square of the cutoff, even though it is technically inessential. As a consequence of this behaviour, the existence of an UV Fixed Point would seem to imply that gravity has a built-in UV cutoff when described in Planck units, but not necessarily in other units.

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