Improved AdS/QCD model with matter

We study an improved AdS/QCD model at finite temperature and chemical potential. An ansatz for the β function for the boundary theory allows for the derivation of a charged dilatonic black hole in bulk. The solution is asymptotically Reissner-Nordström-AdS₅ in the UV and AdS ₂×R3 in the IR. We discuss the thermodynamical aspects of the solution. The fermionic susceptibilities are shown to deviate from the free fermionic limits at asymptotic temperatures despite the asymptotically free nature of the gauge coupling at the boundary. The Polyakov line and the temporal and spatial string tension dependence on both temperature and chemical potential are also discussed.