  Using holographic subregion complexity, we study the
confinement-deconfinement phase transition of quantum chromodynamics. In the
model we consider here, we observe a connection between the potential energy of
probe meson and the behavior of its complexity. Moreover, near the critical
point, at which the phase transition takes place, our numerical calculations
indicate that we need less information to specify a meson in the non-conformal
vacuum than in the conformal one, despite the fact that the non-conformal
vacuum has larger energy!
