Киральный конденсат в сильном магнитном поле

In this presentation we introduced a five-dimensional EMD gravity model to investigate the effect of magnetic field on the QCD features. In particular we considered chiral action to investigate the chiral sector of the dual boundary theory and, in particular, investigate the behavior of chiral condensate and the corresponding chiral critical temperature as a function of the magnetic field.
We talked about the effect of the magnetic field on the chiral condensation. We computed the chiral condensate in the confined and deconfined phases using two form factors. We found that chiral features are form-independent.
The condensate magnitude was found to be increasing with $B$ in the confined phase that is suggesting magnetic catalysis phenomena. Whereas in the deconfined phase we found the chiral critical temperature decreases with increasing $B$, i.e. inverse magnetic catalysis phenomenon. These results are in agreement qualitatively well with lattice results. We have investigated a few other relatively simple form factors and found similar results in all these cases. It seems that in the deconfined phase, the inverse magnetic catalysis behavior is a generic feature of our model. Also, we found that in this model the chiral critical temperature, i.e. $T_{chiral}$ is different from deconfinement critical temperature, i.e. $T_{crit}$.