Scaling Phenomena in Gravity from QCD

Abstract

We present holographic arguments to predict properties of strongly coupled gravitational systems in terms of weakly coupled gauge theories. In particular we relate the latest computed value for the Choptuik critical exponent in black hole formation in five dimensions, \gamma_{5D}=0.412 \pm 1%, to the saturation exponent of four-dimensional Yang-Mills theory in the Regge limit, \gamma_{BFKL}\simeq 0.410.

Comments: 13 pages. To Pere Pascual, in memoriam. v2: minor changes. Typos corrected and references added. v3: conclusions expanded, references added. To appear in Physics Letters B