Trouble Finding the Optimal AdS/QCD

Understand

In the bottom-up approach to AdS/QCD based on a five-dimensional gravity dilaton action the exponential of the dilaton field is usually identified as the strong or 't Hooft coupling.

• There is currently no model known which fits the measurements of the running coupling and lattice results for pressure at the same time.
• With a one parametric toy model we demonstrate the effect of fitting the pressure on the coupling and vice versa.