holographic rg flow triggered by gluon condensate

By applying the holographic method, we study a non-perturbative renormalization group (rg) flow triggered by a gluon condensate. after introducing a bulk scalar field in an ads space related to the gluon condensate, we investigate the trace anomaly proportional to the gluon condensate. the holographic calculation reproduces the one-loop trace anomaly known in the lattice qcd. we also show that higher loop corrections give rise to additional contributions and modify the one-loop trace anomaly.