Quantum gravity at a TeV and the renormalization of Newton’s constant

We examine whether renormalization effects can cause Newton’s constant to change dramatically with energy, perhaps even reducing the scale of quantum gravity to the TeV region without the introduction of extra dimensions. We examine a model that realizes this possibility and describe experimental signatures from the production of small black holes.

Figure 1

Schematic illustration of a possible renormalization group evolution of $M$ with the scale $\mu$.

Figure 2

Contributions to the running of Newton’s constant.